FCC ID: N4ZVKR4A01 Digital proportional radio control system

 

VK-R4A&HRZ00015

USER MANUAL

Digital Proportional Radio

Control System

Copyright ©2021 Flysky Technology co., ltd

Thank you for purchasing our product, an ideal radio system for beginners or experienced

users.

In order to ensure your safety, and the safety of others, read this manual carefully before

using this product. If you encounter any problem during use, refer to this manual first. If

the problem persists, contact your local dealer or visit our service and support website:

www.flysky-cn.com

Contents

1. Safety..................................................................................................................1

1.1 Safety Symbols ................................................................................................................................................1

1.2 Safety Guide.....................................................................................................................................................1

2. Introduction.........................................................................................................2

2.1 Transmitter Overview ................................................................................................................................................2

2.2 Receiver Overview ...........................................................................................................................................4

3. Getting Started......................................................................................................5

3.1 Transmitter Battery Installation..........................................................................................................................5

4. Instructions.....................................................................................................6

4.1 Power On .........................................................................................................................................................6

4.2 LED Indicator....................................................................................................................................................6

4.3 Binding..............................................................................................................................................................6

4.4 Stick Calibration................................................................................................................................................7

4.5 Power Off .........................................................................................................................................................7

5. System Functions.................................................................................................8

5.1 Channel Description ........................................................................................................................................8

5.2 Channel Reverse .............................................................................................................................................8

5.3 Trims..................................................................................................................................................................8

5.4 D/R....................................................................................................................................................................9

5.5 Mode Switching ................................................................................................................................................9

5.6 Failsafe..............................................................................................................................................................9

5.7 Beginner Mode................................................................................................................................................10

6. VK-R4A Receiver Function Instructions....................................................................11

6.1 Attentions ........................................................................................................................................................11

6.2 Use Guidance .................................................................................................................................................11

6.3 Instruction on the binding of the receiver ..........................................................................................................12

6.4 Protection Function Description ......................................................................................................................12

6.5 Alarm for battery power...................................................................................................................................13

6.6 Car light control................................................................................................................................................13

6.7 Failsafe............................................................................................................................................................13

7. Product Specifications........................................................................................................14

7.1 Transmitter Specification( FS-VK-G4P) ..........................................................................................................15

7.2 Receiver Specification (VK-R4A) ....................................................................................................................15

8. Troubleshootings...............................................................................................15

9. Package Contents...............................................................................................16

10. Certification.......................................................................................................17

10.1 DoC Declaration ............................................................................................................................................17

10.2 CE Warning ...................................................................................................................................................17

10.3 Appendix 1 FCC Statement ..........................................................................................................................17

11. Environmentally friendly disposal..................................................................18

1.Safety

1.1 Safety Symbols

1.2 Safety Guide

Pay close attention to the following symbols and their meanings. Failure to follow these warnings could cause damage,

injury or death.

Danger

• Not following these instructions may lead to serious injuries or death.

Warning

• Not following these instructions may lead to major injuries.

Attention

• Not following these instructions may lead to minor injuries.

Prohibited

Mandatory

• Do not use the product at night or in bad weather like rain or thunderstorm. It can cause

erratic operation or loss of control.

• Do not use the product when visibility is limited.

• Do not use the product on rain or snow days. Any exposure to moisture (water or snow)

may cause erratic operation or loss of control.

•

Interference may cause loss of control. To ensure the safety of you and others, do not

operate in the following places:

• Near any site where other radio control activity may occur

• Near power lines or communication broadcasting antennas

• Near people or roads

• On any body of water when passenger boats are present

• Do not use this product when you are tired, uncomfortable, or under the influence of

alcohol or drugs. Doing so may cause serious injury to yourself or others.

•

The 2.4GHz radio band is limited to line of sight. Always keep your model in sight as a

large object can block the RF signal and lead to loss of control.

• Do not touch any part of the model that may generate heat during operation, or

immediately after use. The engine, motor or speed control, may be very hot and can cause

serious burns.

• Misuse of this product may lead to serious injury or death. To ensure the safety of you

and your equipment, read this manual and follow the instructions.

• Make sure the product is properly installed in your model. Failure to do so may result in

serious injury.

• Make sure to disconnect the receiver battery before turning off the transmitter. Failure to

do so may lead to unintended operation and cause an accident.

• Ensure that all motors operate in the correct direction. If not, adjust the direction first.

• Make sure the model stays within the systems maximum range to prevent loss of control.

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Digital Proportional Radio Control System

2.Introduction

2.1 Transmitter Overview

[1]

[2]

[3]

[4]

[5]

[6]

2

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

[17]

[1] Panel flip cover

[10]

Wheel angle, the maximum rotation of the steering wheel is

35 degrees from center to left or right (CH1)

[2] Steering reverse switch (ST.REV)

[11] Throttle trim (TH.TRIM )

[3] Power indicator LED (R. LED)

[12] Steering D/R (ST.D / R )

[4] Status indicator green LED (G.LED)

[13] Power switch

[5]

Two-colors LED battery power level display

(Car battery)

[14] Base, 4 * AA battery compartment

[6] Lanyard hole

[15] Three-position switch (CH3)

[7] Bind button (BIND)

[8] Throttle reverse (TH.REV)

[9] Steering trim (ST.TRIM )

[16]

[17]

Key Switch SW2 (CH4) [Please operate this function by

flipping]

Throttle trigger, has a total throw of 12 degrees, 12.5

degrees forward, and 12.5 degrees backward (CH2)

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Digital Proportional Radio Control System

2.2 Receiver Overview

[6]

[5]

[4]

[3]

[2]

[1]

[7]

[8]

[9]

[10]

[16]

[15]

[14]

[13]

[12]

[11]

CH1

CH3

CH4

Headlight interface

Left turn signal light interface

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

Right turn signal light interface

Battery cable interface"-"

Power cathode

Power anode

Battery cable interface"+"

Power switch

Signal end

Antenna

LED

Motor interface "M-"

Motor interface "M+"

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

4

3.Getting Started

Before operation, install the battery and connect the system as instructed below.

3.1 Transmitter Battery Installation

Danger

• Only use specified battery (X4 AA batteries).

Danger

• Do not open, disassemble, or attempt to repair the battery.

Danger

• Do not crush/puncture the battery, or short the external contacts.

Danger

• Do not expose to excessive heat or liquids.

Danger

• Do not drop the battery or expose to strong shocks or vibrations.

Danger

• Always store the battery in a cool, dry place.

Danger

• Do not use the battery if damaged.

Battery Type: AA

Insert 4 AA batteries with the correct polarity. Make sure it is connected with the correct polarity to avoid damage.

1. Open the battery compartment cover.

2.

3. Replace battery compartment cover.

Low battery alarm: When the battery is lower than 4.2v, the G.LED on the panel will flash slowly.

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Digital Proportional Radio Control System

After setting up, follow the instructions below to operate the system.

4.Instructions

4.1 Power On

Follow the steps below to turn on the transmitter:

1. Check to make sure that that battery is fully charged and installed correctly.

2. Toggle the switch to the [ON] position. When active the R.LED will be lit.

3. Power on the receiver.

•

For safety always power on the transmitter before the receiver.

Note

• Operate with caution in order to avoid damage or injury.

• Make sure that the throttle is at its lowest position and the switches are set to their up

Note

position.

4.2 LED Indicator

1. R.LED

:

2. G.LED

:

The red power indicator;

The green status indicator;

3. Car battery: Two-colors light for battery power level display (hereinafter referred to as D3)

• When the battery power level is high, the D3 green keeps on.

• When the battery power level is medium, the D3 orange keeps on.

• When the battery power level is low, the D3 red keeps on.

• When the battery power level is off, the D3 red slow flash

• When the receiver drops the code, the two-colors light is off.

4.3 Binding

The transmitter and receiver have already been bound at the factory.

However if the receiver needs to be replaced or additional receivers bound follow these steps:

1. Turn on the tra nsmit t er while h o l d i n g t he b i n d b u tto n to enter b i ndi n g mod e. G.LE D w i l l start

fl ashing qui ck ly.

• Once in binding mode release the BIND button.

2. Th e recei ver will power on a n d w a i t fo r 1 s e co n d , i f w i th o ut c onn ecti on , i t w i l l e nter i nto the

bind ing state au t omati cally;

3. Once binding is succ essf ul t h e L E D o f th e re c e i ve r w i l l keep on, an d the G.LE D w i l l off.

Note: When binding, put t he tr a n s mi t t er i n to b i nd i n g s ta te fir st, then th e rec ei ve r.

• Applicable to the FS-VK-G4P transmitter and the VK-R4A receiver. Different receivers have

different binding procedures. For more information, visit the FLYSKY website for manuals

and other related information.

• Product information is updated regularly, please visit our website for more information.

6

4.4 Stick Calibration

This fu ncti on is use d t o s et t he n e ut ra l p o si ti o n fo r thr o ttl e a nd wh eel .

Every transmitter is calibrated before leaving the factory, however if recalibration is required, please

follow these steps:

1. Tur n and hold t he wheel as f a r c l oc k w i se a s i t w i l l tu rn , hol d th e thro ttl e al l the w ay

forw ard,then t ur n on th e t ran smi t t e r i n ca l i b ra ti o n mo d e .

2. Cali brate wheel: Turn t he wh e e l c o m ple te l y c l o ck w i se , th en c ompl etel y c oun terc lo ck w i se.

•

The R.LED and G.LED will flash twice.

• Car Battery, the D3 yellow keeps on.

• When calibration is completed the R.LED will be off.

• Car Battery, the D3 red keeps on.

• When calibration is completed the G.LED will be off.

• Car Battery, the D3 Green keeps on.

4. Both Wheel and r igger ar e C a l i br a ti o n p a ss e d .

•

The two-colors light is off.

3. Tri gger calibra tion: Pull t he tr i g ge r b a ck th e n fo rw a rd a s far as i t w i l l go .

5. Once calibr at ion is com plet e d , p re s s th e b i n d k e y to sa v e and exi t.

4.5 Power Off

Follow the steps below to turn off the system:

1. Disconnect the receiver power.

2. Toggle the transmitter's power switch to the OFF position.

Danger

do so may lead to damage or serious injury.

• Make sure to disconnect the receiver power before turning off the transmitter. Failure to

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Digital Proportional Radio Control System

5.System Functions

This section focuses on the functions and how to use them.

The transmitter out put s a tot al o f 4 c ha n n e l s, w h i ch a re a l l o c ated a s fol l o w s:

5.1 Channel Description

• CH1

Steering wheel

• CH2

Throttle trigger

• CH3

Three-position switch

• CH4

Key switch

：

：

：

：

5.2 Channel Reverse

5.3 Trims

Note : By de fault t he out put of CH 4 i s 1 0 0 0 u s, a fte r w h ic h p re ss ing th e butto n w i l l to ggl e between

1000 and 2000us .

This function is used to adjust e a ch c h an n e l s d i r ec ti on o f m ove men t i n r el ati on to i t’s i n put.

The ST.REV / TH. REV swit c hes a re th e re v e rse b u tto n s fo r C H 1 a nd C H 2 . If the s w i tch i s u p it

indicates rever se, and the dow n i n d i c a te s n o rma l .

The ST.TRIM is t he t rim s f or C H 1 ( s te e ri n g ),a n d c an b e mu l ti pl e xed a s Tri ms of C H 3 an d C H4. For

multip lexing switc hing mode, se e [ 5. 5 Mo d e S w i tch i n g ].

TH. TR IMis the trim s fo r CH2(t h r ot t l e ).

Adjustment range: - 120us- + 12 0 u s , e a c h s te p i s 4u s ;

ST. TR IM + / TH.T RI M +: incre a s e a d j u s tm en t s te p ;

ST. TR IM- / TH.T RI M- : Dec reas e a dj u s t me n t ste p .

LED Ind icator :

• When using the trim keys the G.LED will flash slowly on short presses and quickly on long presses.

• When the fine adjustment value is at the midpoint, the G.LED will flash twice slowly.

• When the fine adjustment value is at both ends (+ 120us / -120us), the trim adjustment is at its

maximum and as such G.LED will not flash(if the fine adjustment value has been adjusted to + 120us,

then press ST.TRIM + / TH.TRIM + key is invalid and G.LED has Instructions)

8

5.4 D/R

ST. D / R is for se rvo t ravel ad j us t me n t , w h i c h c a n b e mu l ti p l ex ed as C H 2 (thr ottl e), C H 3, C H4

servo travel adjus tm ent, see [ 5 .5 Mo d e S w i tch ] for mu l ti p l e x sw i tc hi ng m ode ;

Adj ustment range: 0-120%(t he d e fa u l t i s 1 0 0 % ), th e s te p i s 5 % .

ST.D / R + : inc rease ser vo tr a v el .

ST.D / R - : d ecr ease ser vo t r av e l .

LED Indicator:

• When using the trim keys the G.LED will flash slowly on short presses and quickly on long presses.

• When the ratio value is at both ends (0/120%), the ST.D / R button is at its maximum and as such G.LED

will not flash(if the ratio value has been adjusted to 120%, then press ST.D/R+ key is invalid and G.LED

has Instructions)

5.5 Mode Switching

Function setting:

This fu ncti on is for reusing the S T. T R I M an d S T.D / R b u tto n s for di fferen t c ha nnel s (se e [5.3

Trims], [5.4 D/R).

Under normal power -on, quic kl y p re s s t h e Bi n d b u tto n tw i c e (w i th in 1 Sec) to cycl e throu gh modes

1, 2, 3, and 4. Th e default set ti n g w h en p ow er in g o n i s mo d e 1 .

Mode 1: G.LED flas he s slowly o n ce , S T. TR IM i s C H1 fi n e a dj us tment, S T.D / R i s se rvo tra vel

adjustment.

Mode 2: G.LED fl ashes twice sl o w l y, ST.TR IM i s C H 1 fi n e a dj u stme nt, S T.D / R i s C H 2 se rvo travel

adjustment.

Mode 3: G.LED flas he s thr ee t i me s s l o w l y, ST.TR IM i s C H 3 fi ne a dj us tment, S T.D / R i s C H 3 servo

trave l adj ustme nt .

Mode 4: G.LED flas he s slowly f ou r t i m es , S T.TR IM i s C H 4 fin e ad ju stme nt, ST.D / R i s C H 4 servo

trave l adj ustme nt .

5.6 Failsafe

This fu ncti on prot ec ts t he use r b y pr e v en ti n g th e m o d e l fr om beha vi n g une xpe cted l y i f si gn al is

lost.

The tra nsmitter is d ef ault set as no s i g na l o u tp u t w h e n fa ci ng mal fun cti on a s the Fai l s afe

Protection.

9

Digital Proportional Radio Control System

5.7 Beginner Mode

Beg inner mode is designed f or p e op l e n ew to th e h o b by.

In this mode the throt t le will be l i m i te d t o 5 0 p e rce nt, Th e ch ann el ran ge de faul ts to

1250~1500~1750us.

Set up:

To switch between beginner and n or ma l mo d e s , fi r st p re ss a nd h ol d the cha nnel 4 button a nd Turn

the handwhe el to t he bot tom c o u n t e rc l o ck w i se , th e n tu rn o n th e tran smi tter.

Note : By default, th e sys t em is set t o n o rm al mo de . The GLE D w il l fl ash sl owl y for 3 s ec onds

during pow er o n if t he syst em i s se t t o b e g i n n e r mo d e .

10

 Receiver Function Instructions

6.

based o n ANT pr ot ocol is a three-in-one rece ive r with ESC and LED light group control

boa rd. It has an e xt ernal sin gl e a n t e n n a , ca n o utp u t P WM si g nal an d l i ght c ontro l si gn al , can

imple ment two-way t r ans m issi o n , a d o p ts a u to m ati c b i n d i ng , an d ha s a co mpa ct d e si g n, which

can be adapted t o v ari ous m od e l s.

6.1 Attentions

serious injury.

• Make sure the pr oduct i s inst a l l e d a n d ca l i b ra te d c or r ec tly, fai lu re to do so m ay re sul t in

• Please carefull y check each p ow e r d e vi c e a n d c a r fr am e i nstr uc tion s to en sur e the po wer

match ing is r ea sonable before u s e . Avo i d da ma gi ng po wer s y ste m due to inc or rec t m atching.

• Do not let the ext e rnal t emper at u re o f the sy s tem ex c eed 90 ℃ /19 4 ℉ , be cau se h ig h

te mpe rature w il l da mage t he po w e r s ys tem .

• Make sure the r ece ive r's b at t ery i s di sc o n n e cte d b e fo re tu rn i ng off th e tran smi tter, fa i l ure to

do so may lea d t o uninte nded o p er a ti on or lo ss o f co n tro l .

• After use, remem ber t o disc on ne c t th e ba tte ry a n d th e E S C . If the b attery i s n' t di sc onn ected,

th e ESC will c ons ume elect ric e ne r gy al l th e tim e e ve n i f i t i s off. It w i l l di sc har ge c ompletely if

conne ct the ba t tery f or a long ti m e, t h u s re su lti ng i n th e fa i l ur e of the b attery o r the E S C. We

are not respo nsi ble f or any dam a ge c a us e d b y th i s!

• Make sure the r ece ive r is mou nt e d aw a y fr om mo tor s o r a n y d evi c e that e mi ts ex ces si v e

• Keep the antenna of th e recei ve r a t l e as t 1 cm a w a y fro m c o ndu ct i ve ma ter ial s su ch as carbon

electrical noise .

or m etal .

• Do not pow er on t he rec eiver d u ri n g t h e se tu p pr oc e ss to p re ve nt l oss of con trol .

6.2 Use Guidance

1 . Con nect related e quipm ent .

• Make sure the ESC is o ff bef or e c o n n ecti o n . C o n n e ct th e motor w i th M + a nd M- o f E S C .

Connect the steering se rvo t o t h e 3 P i n i nte rfa ce ma rk e d w i t h “S T” o f ES C (- + S c onne cted

correspondingly). Connectthe battery with the positive and negative poles of ESC correspondingly.

Tip s：

If the rotation direct ion is n ot c o rr e ct d u rin g ru n n i ng , e x ch a nge th e tw o w i res co nnec ti ng motor

and ES C.

Battery

LED

Servo

ESC&RX

Motor

2. Nor mal boot, i dent if icat io n t h ro t t l e mi d p o i n t

• After connecting related equipment as step 1, turn on the radio first, move the throttle trigger to

the neutral positi on. Turn on t h e sw i t c h o f E SC a t l a s t. Th e re cei v er w i l l au to mati c al l y re cognize

t he battery type wh en i t is po we r ed o n a g a i n . Th e n i t ca n ru n i t.

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Digital Proportional Radio Control System

Notes: a. The ES C ca n be r un af t e r co mp l e ti n g se l f-i n s p e cti o n (a b out 3 s eco nds ) i f pow er on,

othe rwi se it cannot be operate d n o rm al l y.

b . If ther e is no power ou t pu t an d t he re d l i g h t o f ES C fl ash es q ui ck l y a fte r pow e r on,

please c heck whet her t he t hr ot t l e t ri m o f th e tra n smi tte r i s s et to the "0 " p osi ti o n, th e rec ei ver will

auto maticall y r ec ognize t he m i d p o i n t o f t h e tr i m th ro ttl e a fte r res tarti ng ;

c . If the rot at ion direct io n i s n o t c o rr ec t d ur i n g ru n ni n g, ex cha nge th e tw o w i res con necting

motor and ESC.

d . To mak e sur e ever yt hi n g i s o k , pl e a se tu rn o n th e t ran smi tter fi rs t and fi n al l y tur n on the

ESC, turn off th e ESC f ir st and f i na l l y t ur n o ff th e tra n smi tte r.

6.3 Instruction on the binding of the receiver

If you need to b ind t he r ec eive r a g ai n , p l ea se re fe r to [4 .3 Bi n di ng ]

Notes: (1) Set the tr ansm it t er t o i t s b i n di n g s ta te fi rst, a n d th e n se t the rec ei ve r to i ts bi n di ng

state. If the bi nding is not com p l e te d w i t hi n 1 0 s, th e i nd i c a tor l i gh t o f th e rec ei ve r w i l l ente r its

slow flashing stat e.

(2) If re- binding is s ucces s f u l , a l l th e se tti n g s o f th e c ar l i gh ts w i l l be r esto red to the i r

defa ult val ues.

6.4 Protection Function Description

1. Low volt age p ro tecti o n

The low -voltage prot ec tio n val u e i s 6 .3 V.

When the ESC det ec ts t hat t he ba t t e ry v ol ta g e re a c he s th e l o w- vo ltag e p rote ction va lu e for 2

seco nds, the outp ut power of E S C w i l l be h a l ve d , th a t i s , th e ESC wi ll ope ra te at 50 % of the

outp ut power. The ESC will cu t off th e o utp u t co mp l ete l y aft er a fe w s ec ond s, and th e red l ight of

ESC wi ll blin k in c ycle. Af t er t r i gg e ri n g th e l o w -vo l ta g e p ro te cti on , p l eas e rep l ace th e ba tte ry or

fully charge the batt ery b ef ore u s e.

Note: If i t i s easy to tr igger t he l ow vo l t a g e p ro te cti o n du ri n g u s e , i t is pro bab l y ca use d by the

insufficient dischar ge capacit y o f th e b at te ry. P l e a se re p l a ce th e batter y w i th a h i ghe r di sc harge

rate to test.

2.Over heat prot ect i on

When the internal t em per at ure o f E S C re a ch e s th e p re se t v al ue (110

manufactur er and last s for 2 s e c o n ds , th e ES C wi ll di re c tl y cut o ff th e output, and all car l ights

flash promptly,

) o f th e

/23 0

℉

℃

Note: If ESC is easy t o t ri gger t he o ve rh e a t p ro tec ti o n , i t i s u su a l l y be cau se th e con fi gura ti on is

unreasonable, that is , t he ESC c a n no t mee t th e v e hic l e c onfi gur atio n req uir em ents, p leas e reduce

the vehicle load or r epl ace t he E S C w i t h h i g h e r p o we r.

3. Signal loss p ro t ecti o n

When the ESC de tect s t hat t hr ot t l e s i g n a l is lo st fo r 0 .1s , it w il l autom ati cal ly c ut off the output

and the red li ght w ill f la sh quic k l y.

4. Self-check di sp l a y:

All c ar lights will be on f or 1S w h en t h e r ec ei ve r i s po wer e d on.

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6.5 Alarm for battery power

This receiver prov ides a n alar m f o r t h e b a tte r y p o w e r l e ve l . You ca n ob ser ve the col o r of the LED

indicator on the t ransmit t er t o l e a rn ab o u t th e b a tte ry p o we r l ev el i n re al ti me. W hen th e battery

power l ev el i s too low, yo u nee d t o c ha r ge i n ti m e .

• When the batter y power leve l i s h i g h , t he co l o r o f th e L ED i n di ca to r i s gr een , a nd the LE D

indicator is alway s on.

• When the batter y power leve l i s m e di u m, th e c o l o r o f th e LE D i ndi c ator i s oran ge, an d the LED

indicator is alway s on.

• When the batter y power leve l i s l o w, t he co l o r o f th e L E D i ndi c ator i s r ed, an d the L ED i ndicator

is alw ays on.

• When the batter y power leve l i s u l t ra - l ow, th e co l or of th e LE D i nd i cato r i s red , and the LED

indicator is in flashing s lowly st a t e .

Notes : (1) When th e batt ery powe r le v e l i s u l tra -l o w, th e th ro ttl e o f the m ode l car h as n o output,

but the direc tion ca n be co nt ro l l e d.

(2) When the battery po w e r l e v e l i s n o t u l tra - l ow, th e mo del car c an be co ntr ol l ed normally.

6.6 Car light control

The car light c ont rol is m ainly i m pl e m en t th e c h an ge o v e r o f l i ghti n g state s an d l i ghti n g modes by

sett ing the transim it t er.

1. Car light con tro l

The left and right turn signal l i gh ts o f t h e m o de l c a r a re co ntrol l e d thro ugh r otati ng th e ha nd wheel

of the transmi tter, while t he hea dl i g h t co n tro l i s d o n e b y to g gl i ng th e C H 3 ke y on th e tran smitter.

• When the hand wheel is rot at e d c l o c k w i se o r co u n te rc l o ckw i s e, i .e. w he n the mo del ca r i s

turned to the left or r ight , t he tu r n s i g n al l i g h t i s i n a sl o w flas hi ng state.

• When the CH3 key o n t he t r a ns m i tt e r i s l o ca te d a t th e l e ftmost en d, the he adl ig ht is o ff. When

the CH 3 key is loca t ed at the mi d d l e po s i ti o n , th e h e a d l i g h t i s on . When th e C H3 k ey i s l ocated at

the rightmost en d, the headlig ht i s i n a fa s t fl a sh in g s ta te .

2. Modes of the car l i g ht c on tr o l

Press CH4 button on t he t rans mi t t er t o s w i tch the w o r ki n g mode o f th e ca r li gh t co n tro l. One mode

is switched while yo u pr ess t he C H 4 b u t ton on ce . Th a t i s , tu rn si gn al l i ght mo de, em erge nc y light

mode, sharp flash mode and o ff mo d e a r e s w i tc he d i n tur n .

• Turn signal lig ht mode: In t hi s m o de , th e tu rn si g n a l l i g h t i s i n a sl ow fl as hi ng state w h en the

model car turns. T he t urn sig na l l i g h t s a r e al wa ys o ff w h e n the m ode l c ar d oes n' t tu rn.

• E mer gency li ght m ode: I n t hi s mo d e, t h e tur n s ig n al l i g h ts a re i n a s yn chro nou s an d sl o w

flashing state reg ardless of whe th e r t h e mod el ca r tu rn s o r n ot.

• S harp flash mode: I n t his mo d e, t he t u rn si g n a l l i g h ts a re i n a s yn chr ono us an d fas t fl as hing

sta te regardless of whet her th e m od e l c ar tur ns o r n o t.

• Off mode: In thi s mode, the t u rn s i g n a l li gh ts a re a l w a ys o ff rega rdl e ss o f w h ethe r the model car

turns or not.

Note : Every time t he re ceiver is t urn e d o n , th e m od e o f th e c ar li ght c ontr ol i s i n tur n si gnal light

mode.

6.7 Failsafe

This fu ncti on is use d t o prot ec t t h e sa f e t y o f th e mo d e l a n d the ope rator w h en the r ece i ver cannot

normally receive t he signal f rom t h e tr an smi tte r a n d i s o u t o f con tr ol . The re ce iv er d efaul ts that

the thro ttle channel is f ixed t o b e o u t o f co n tro l a n d e n te rs th e bra ke s tate. A fte r othe r cha nnels

are out of control, t he receiv er ha s n o s i g n al o u tp u t. If y o u se t i t on th e tran smi tter, i t w i l l output

ac co rdi ng to the s et v alue.

13

Digital Proportional Radio Control System

7. Product Specifications

7.1 Transmitter Specifications

Product Model

According to battery type

VK-R4A, HRZ00015

133

Car, Boat

2.4GHz

<20dBm

ANT

>150m

ground

（

）

1024

NO

<4.2V

No

Black

220g

CE

No

-10

—+60

℃

℃

20—95%

160*193*97mm

Channels

Model Type

RF

RF Power

2.4GHz Protocol

Distance

Channel Resolution

Charging Interface

Life time

Low Voltage Warning

Data Interface

Temperature Range

Humidity Range

Online Update

Color

Size

Weight

Certification

14

8. Troubleshootings

Trouble(s)

Possible Causes

Solution(s)

The motor cannot st a rt

and the indicator light i s

not o n after power on.

1. Th e ES C has no w orkin g

vo ltage .

2. Th e s wit ch o f ES C or

ES C its elf i s damag ed

1 . C he ck wh e th er th ere i s a n y c o n ne ction

p rob le m be twee n the batter y a nd ES C

a nd wh ethe r th ere i s fau lty w el d i n g o f the

re le va nt pl ug.

2 . R etu rn to fa ctory fo r in sp ec ti o n a n d

tre atme nt.

The motor cannot st a rt

and the red LED f la shes

quickly after power on.

T he midpoint of thr ottle

ch annel of r adi o i s shi ft o r

ch anged

Ad ju st the thr ottle c ha nne l of th e ra d i o to

ma tch th e exi stin g ne utral p o in t ( un til the

re d l ig ht do e s n ot fla sh).

When forward th e ca r by

radio , it reverse.

The motor suddenly

sto ps rotating d ur ing

rotation.

1. Th e c onn ect i on se quenc e

bet ween out put lin e of

ES C and m otor li ne.

2. Th e t hr ot t le di rectio n o f

ra dio i s wro ng ly s et

1. Th e t hr ot t le sig na l is l os t.

2. Th e ES C ent ers l ow

vo ltage pro tect io n or

ov erheat pr ot ecti on of

bat t ery

1 .E xcha n ge the po si tio n of two l i n e s of

mo tor.

2 . Se t thro ttl e di rec tion o f r ad i o to th e

o pp osi te di re ction

1 .C he ck r adi o a nd re cei ve r.

2 . Th e re d l ig h t o f th e ESC wi l l fl as h i n

a s in gl e cyc le. P leas e ch ec k th e b a ttery

vo lta ge and the tempe rature o f ES C .

When the motor st art s,

it acceler ates rapidly,

and the motor is s tuc k

or stops.

1. B at t ery discha rge

ca pacit y is insuffi cie nt

2. Th e r ot ation sp ee d of

mot or i s too fa st, th e gear

ra tio is n ot reaso nabl e.

1 . R ep la ce b atte ry with stro ng d is c ha rge

ca pa ci ty.

2 .R ep la ce l o w spe ed mo tor,or i n cr ea se the

re du ctio n ra ti o .

15

Digital Proportional Radio Control System

9. Package Contents

Transm itte r* 1

Receiver *1

16

10. Certification

10.1 DoC Declaration

10.2 CE Warning

Hereby, [Flysky Technology co., ltd] declares that the Radio Equipment is in compliance with RED

2014/53/EU.

The full text of the EU DoC is available at the following internet address: www.flysky-cn.com.

The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all

persons and must not be co-located or operating in conjunction with any other transmitter. End-users and installers

must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure

compliance.

10.3 Appendix 1 FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of

the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential

installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used

in accordance with the instructions, may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to

radio or televison reception, which can be determined by turning the equipment off and on, the user is encouraged to try

to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

To assure continued compliance, any changes or modifications not expressly approved by the party responsible for

compliance could void the user's authority to operate this equipment.

This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may cause undesired operation.

Caution!

The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this

equipment. Such modifications could void the user authority to operate the equipment.

1. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all

persons and must not be co-lacated or operating in conjunction with any other transmitter.End-users and installers

must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure

compliance.

2. Move all your channels to the desired position.

3. Select [All channels] and then [Yes] in the confirmation box.

17

IC

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation,

Science and Economic Development?Canada’s licence-exempt RSS(s).Operation is subject

to the following two conditions:

1.This device may not cause interference.

2.This device must accept any interference, including interference that may cause undesired operation of the device.

L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux

CNR d’Innovation, Sciences et Développement économique Canada applicables aux

appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :

1.L’appareil ne doit pas produire de brouillage;

2.

L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est

susceptible d’en compromettre le fonctionnement.

FCC statement

This device complies with Part 15 of the FCC rules. Operation is subject to the

following two conditions:

1) this device may not cause harmful interference, and

2) this device must accept any interference received, including interference that may

cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class

B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful interference in a residential

installation. This equipment generates uses and can radiate radio frequency energy

and, if not installed and used in accordance with the instructions, may cause harmful

interference to radio communications. However, there is no guarantee that

interference will not occur in particular installation. If this equipment does cause

harmful interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

--Reorient or relocate the receiving antenna.

--Increase the separation between the equipment and receiver.

--Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

--Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

FCC Radiation Exposure Statement

This device complies with FCC RF radiation exposure limits set forth for an

uncontrolled environment. This transmitter must not be co-located or operating in

conjunction with any other antenna or transmitter.

11. Environmentally friendly disposal

Old electrical appliances must not be disposed of together with the residual

waste, but have to be disposed of separately. The disposal at the communal

collecting point via private persons is for free. The owner of old appliances

is responsible to bring the appliances to these collecting points or to similar

collection points. With this little personal effort, you contribute to recycle

valuable raw materials and the treatment of toxic substances.

CAUTION

RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS

18

Digital Proportional Radio Control Systemwww.flysky-cn.com

Copyright ©2021 Flysky Technology co., ltd

Release date: 2021-06-15



 

 

 

 

 

 

 

 

 

 

FCC ID: N4ZVKR4A01 Page 1 of 1 Report No.: CTL2107099022-WF FCC-ID Label Information 1. Label location:

Digital proportional radio control system Model: VK-R4A 2. FCC ID Label:

FCC ID: N4ZVKR4A01 N4ZVKR4A01

 

 

FLYSKY RC MODEL TECHNOLOGY CO., LTD

C5266091_X10_Ed.1

Office of Engineering Technology

Federal Communications Commission

7435 Oakland Mills Road

Columbia, MD 21046

Subject: Request for Confidentiality

FCC ID: N4ZVKR4A01

To Whom It May Concern,

Date: 2021.09.01

Pursuant

to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following

attachment(s) as confidential document from public disclosure.

Exhibits

ID Label/Location

Attestation Statement

External Photos

Block Diagram

Schematics

Test Report

Test Setup Photos

User’s Manual

Internal Photos

Parts List / Tune Up

RF Exposure Info

Operational Description

Cover Letter(s)

SDR Software / Security Info

Long-Term

Confidentiality

No

No

No

Short-Term

Confidentiality

No

No

No

No

No

No

No

No

Above mentioned document contains detailed system and equipment description are

considered as proprietary information in operation of

the equipment. The public

disclosure of above documents might be harmful to our company and would give

competitor an unfair advantage in the market.

It is our understanding that all measurement test reports, FCC ID label format and

correspondent during certification review process cannot be granted as confidential

documents and those information will be available for public review once the grant of

equipment authorization is issued.

1/1

C5266091_X10_Ed.1

Sincerely,

Signature:

Name:COOL Chen

Title:VICE MANEGER

1/1



 

 

FLYSKY RC MODEL TECHNOLOGY CO., LTD

West building3, Huangjianyuan Ind, Park QIAOLI North Gate Changping Town, Dongguan, China

TEL: 0769-86836007

FAX: 0769-83365124

Series Models Description

FCC ID: N4ZVKR4A01

Federal Communications Commission

Authorization and Evaluation Division

Date: September 1, 2021

The device (Product Name: Digital proportional radio control system)

Models Name: VK-R4A, HRZ00015 have same electrical, PCB and BOM, only

the model

s name and colour are different for marketing requirements.

’

7435 Oakland Mills Road

Columbia, MD 21046

To whom it may concern:

Sincerely,

COOL Chen / VICE MANEGER



 

 

C5266091_X8_Ed.1 Letter of Authorization Company: FLYSKY RC MODEL TECHNOLOGY CO., LTD Address: West building3, Huangjianyuan Ind, Park QIAOLI North Gate Changping Town, Dongguan, China Product Name: Digital proportional radio control system Model Number: VK-R4A, HRZ00015 FCC Identifier: N4ZVKR4A01 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: COOL Chen Date: 2021.09.01 Title: VICE MANEGER Signature of applicant:

1/1