FCC ID: N4ZST800 Digital proportional radio control system

FS-ST8B&FS-Br01 Manual Digital Proportional Radio Control System Copyright 2023 Flysky Technology Co., Ltd. Website

. Table of Contents 1. Introduction ..........................................................................................................3 1.1 Transmitter Overview .................................................................................................................. 3 1.1.1 Controls Description ...................................................................................................................... 4 1.2 Receiver Overview ....................................................................................................................... 5 1.2.1 Receiver LED Status ....................................................................................................................... 5 1.3 Antenna Related .......................................................................................................................... 5 2.Introduction Before Use .........................................................................................6 2.1 Transmitter Battery ...................................................................................................................... 6 2.2 Turn ON/OFF The Transmitter .................................................................................................... 6 2.3 LED ................................................................................................................................................ 6 3. Main Menu ..............................................................................................................7 4. Function Menu .......................................................................................................8 4.1 Boat Psn(Boat position) .............................................................................................................. 8 4.2 Fish Spot Setting .......................................................................................................................... 8 4.3 Auto Home.................................................................................................................................... 8 4.4 Binding Setting ............................................................................................................................ 8 4.5 Basic Setting ................................................................................................................................. 9 4.5.1 Stick Calibration ............................................................................................................................. 9 4.5.2 Firmware Update ........................................................................................................................... 9 4.5.3 About .............................................................................................................................................. 9 4.5.4 More ............................................................................................................................................... 9 4.6 System Setting ........................................................................................................................... 10 4.6.1 Language ...................................................................................................................................... 10 4.6.2 Sound ........................................................................................................................................... 10 4.6.3 Volume .......................................................................................................................................... 10 4.6.4 Standby Timeout ......................................................................................................................... 10 4.6.5 Battery Type ................................................................................................................................. 10 4.6.6 LED Color ...................................................................................................................................... 10 4.6.7 LED Brightness ............................................................................................................................. 10 4.6.8 LCD Brightness .......................................................................................................................... 10 4.6.9 Contrast ........................................................................................................................................ 10 4.6.10 Backlight Time ........................................................................................................................... 11 4.6.11 Auto Shutdown .......................................................................................................................... 11 5. Product Specifications ....................................................................................... 12 5.1 Transmitter Specification ........................................................................................................ 12 5.2 Receiver Specifications ............................................................................................................. 13 6. Certifications ....................................................................................................... 14 6.1 CE Warning ................................................................................................................................. 14 6.2 FCC Statement ........................................................................................................................... 14 6.3 Environmentally Friendly Disposal .......................................................................................... 15 6.4 FCC SAR....................................................................................................................................... 15 1. Introduction This system consists of the FS-ST8B transmitter and FS-Br01 receiver, and is specially designed for the bait boat model. This system needs to be used with the boat control board. Through the transmitter, users can remotely control the boat's driving, baiting, and light switch. Through the GPS satellite positioning system on the integrated control board, it can automatically navigate the model boat to multiple destinations and return back to the starting place, with the travel distance calculated. When the receiving signal is weak, the model boat will automatically turn back. In order to facilitate the operator to control the bait boat, this transmitter is equipped with a display screen, to allow users to control the status of the bait boat in real time, such as the remote signal strength, number of satellites, transmitter battery level and boat, etc. In addition, it is also equipped with the audible alarm system. There will be an audible alarm when the battery power of the transmitter or boat is too low. 1.1 Transmitter Overview

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[1] Display

[2] EXIT Button

[3] MENU Button

[4] Neck Strap Hook

[5] Left Stick(self-centering)

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(Power Switch)

[7] Three-position Switch

[8] VRA Knob

[9] Built-in Antenna

[10] VRB Knob

[11] SWD Two-position Switch

[12] LED

[13] Right Stick (self-centering)

[14] Scroll Wheel

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A Hole for Fixing the Cell Phone Holder A Reserved Hole for Exterial Antenna

[17] Battery Compartment

[18] A Reserved Hole for XT30 Cable

[19] JST Jack for 2S lithium battery

[20] Right Button

[21] Left Button 3 Website 1.1.1 Controls Description The matchup between the transmitter control and the bait boat function is described as follows (Note that the function is related to a specific protocol). Left Stick: Controls the container. Up: N/A Down: When the left LED and right LED flash for three times at the same time, the left and right containers open. Left:When the left LED flashes for three times, the left container opens. Right: When the right LED flashes for three times, the right container opens. Right Stick: Controls the bait boat to turn left or right and move forward or backward. Up: Controls the bait boat to move forward. Down: Controls the bait boat to move backward. Left: Controls the bait boat to turn left. Right: Controls the bait boat to turn right. SWA Switch (three-position): Turns on and off the LED of the bait boat, and adjusts its Up: Turns off the LED. Middle: Turns on the LED, with low brightness. Down: Turns on the LED light, with high brightness. VRB Knob: Adjusts the motor speed. Left Button Press the button to start the auto return (Auto home) function. The boat will return to the starting point automatically. To exit the return function, press the button again or toggle the right stick (the travel exceeds 2/3 in any direction). The bait boat will travel at the speed as defined by the stick position after exit. Right Button: Fixed speed When you press the button during the boat movement, the boat will move forward with the current throttle output speed. In this case, the stick can only control the boat to turn left or right or move backward. Note that the stick needs to toggle more than 2/3 of the travel so that the boat can move backward;

When you press the button during the boat movement, if the throttle is in neutral position, the boat will stop. If the boat moves forward at this time, it will advance forward with the current throttle output speed. 4 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 1.2 Receiver Overview FS-Br01 Receiver

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RX Interface TX Interface BIND Interface

-Power cathode

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+Power anode Signal Pin LED Antenna 1.2.1 Receiver LED Status The LED status indicates the power supply state of the receiver and its working state. Three-flash-one-offslow flash): The receiver is waiting for firmware' update or forced firmware' update. Three-flash-one-offFast flash): The firmware of the receiver is upgrading. Fast flash:The receiver is waiting for binding or in the bind mode. Slow flash: The LED flashes slowly when the receiver is not received the signal, or losing signal. Solid on: The receiver and the transmitter is conneted normally. 1.3 Antenna Related This transmitter supports two antennas (internal antenna and external antenna). 5 Website 2.Introduction Before Use 2.1 Transmitter Battery You can AA batteries or 2S lithium batteries for this transmitter. 2.2 Turn ON/OFF The Transmitter After the battery is installed, press and hold the power switch for seconds to turn on the transmitter. Note: If the throttle stick is not at its neutral position when the transmitter is powered on. A pop-up menu will appear to remind you to put the throttle stick to neutral position and send a alarm sound. 2.3 LED This LED is a multi-color indicator. It displays in a variety of colors such as red, green, blue, yellow, cyan, purple, white, and dazzling colors. You may set it to none. In addition, you may set it to display the electricity level. The brightness of LED can also be adjusted. The LED can be used to indicate the status of the transmitter or to give an alarm when the transmitter voltage is low, as shown in the following table:

LED Color The Status Corresponding Status Note Monochrome or dazzling color Gradual The transmitter's display is locked, or the transmitter is in idle mode. Monochrome or 7 color cycles in sequence. Red Solid ON The voltage of the transmitter is low. 6 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 3. Main Menu To display the transmitter signal strength in real time To display the number of satellites searched in real time To display the transmitter battery level in real time in percentage form Transmitter battery power To display the boat battery level in real time in percentage form Note:

1. There will be an audible alarm when the battery power of the transmitter, meanwhile, the battery icon will be slow flashing, and the buzzer will buzze to prompt. 2. When the system detectes the battery power of the boat is lower than 20%, a popo-up prompt for low voltage alarm will be sent, meanwhile, and the boat will automatically return back to the starting place. 7 Website 4. Function Menu This transmitter function menu includes the following functions, which can be set by users as required, including Boat Psn, Fish spot setting, Auto Home, Bind setting, Basic setting and System settings. 4.1 Boat Psn(Boat position) Use to display the position of the bait boat in real time, including the bathymetric data of the current location, the temperature, and the distance between the current position and the starting point. Ensure the transmitter and the receiver are connected normally and the starting point is saved before enabling this function. This function is related to the specific protocol. 4.2 Fish Spot Setting You can set [Start point] and [Fishing point] through this function. A total of 30 fishing points can be set. You can navigate from one fishing point to another. As a result, you can start from the starting point and navigate to the fishing point automatically. You can select [Manual] or [Auto]. When you select [Manual], the manual interface appears, displaying the current boat direction and distance between the boat and fishing point. The bait boat will approach the target fishing point through manual operation. When you select [Auto], the bait boat automatically arrives at the fishing point saved according to the direction defined by the GPS. This function is related to the specific protocol. 4.3 Auto Home When this function is enabled, the bait boat will automatically start to return to the starting point after the baiting is finished at the fishing point. Note that the starting point must be saved before enabling this function. Note: The function is available only when the bait boat is enabled with the auto-cruise. 4.4 Binding Setting It is used to complete the bind between the FS-ST8B transmitter and FS-Br01 receiver. The transmitter supports two-way binding. The transmitter will display the information returned from the receiver after the two-way binding is completed. In addition, the bind settings (between the transmitter and receiver) has been completed before delivery from the factory. 8 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 4.5 Basic Setting Used to set basic functions, including Stick calibration, Firmware Update, About and More. 4.5.1 Stick Calibration The calibration is required in case of data offset of the transmitter due to physical wear in long-term operations. At this time, we need to calibrate the output data and neutral angle of the stick, and potentiometers. The transmitter has been calibrated before ex-factory. 4.5.2 Firmware Update Put the transmitter into a firmware update state. When the firmware needs to be upgraded, it is need to put the transmitter into upgraded mode using this function first. You can update the firmware by downloading the latest version of the transmitter firmware from your computer or by using the FlySkyAssistant. 4.5.3 About In this function, you can view some information, such as the product name, firmware version, firmware release date, and hardware version. 4.5.4 More See more contact informations about our companny. 9 Website 4.6 System Setting Used to set some functions, including Language, Sound, Volume, Standby timeout, Battery type, [LED color, LED brightness, LCD brightness, Contrast, Backlight time and Auto shutdown. 4.6.1 Language To set the system language, including Chinese and English. 4.6.2 Sound To set the sound for system and alarm. SYS+ALA means the same sound for system and alarm. 4.6.3 Volume To set the volume of the sound. 4.6.4 Standby Timeout To set the time of the standby timeout or whether to enable the standby timeout function. 4.6.5 Battery Type To set the battery type. 4.6.6 LED Color To set the color of the LED, or to turn off the LED. 4.6.7 LED Brightness To set the brightness of the LED. 4.6.8 LCD Brightness To set the brightness of the LED. 4.6.9 Contrast To set the contrast of the LCD. 10 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 4.6.10 Backlight Time To set the time of the backlight, namely how long the screen takes to turn off when not in use. 4.6.11 Auto Shutdown To set the time of auto shutdown, and enable or disable it. 11 Website 5. Product Specifications 5.1 Transmitter Specification Product Model Adaptive Receivers Adaptive Models FS-ST8B FS-Br01 Bait Boat Distance

>200mwater distance without interferencefor bulit-in antenna

>400mwater distance without interferencefor external antenna Low Voltage Alarm Battery Capacity <20%

Antenna Type Two Antenna(one bulit-in antenna and one external antenna) DIspaly Battery 128*64 LCD (Black and white dot matrix screen) 1.5AA*4 / 2S LipoJST Temperature Range

-10 ~ +60 Humidity Range 20% ~ 95%

Languages Charging Port Color Dimensions Weight Online Update Certifications Chinese, English None Black 176*210.9*82.5mm 420g Yes CEFCC ID: : N4ZST800 12 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 5.2 Receiver Specifications Product Model Adaptive Transmitter Antenna Type FS-Br01 FS-ST8B Single External Antenna Distance Input Power Working Current Online Update

>400m(water distance without interference 3.5~9V/DC 62mA Yes DIspaly Manner In LED manner Temperature Range

-10 ~ +60 Humidity Range 20% ~ 95%

Dimensions Weight 23.5.8*38.5*11.5mm 10g Certifications CEFCC ID: 2A2UNBR0100 13 Website 6. Certifications 6.1 CE Warning 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. 6.2 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, and

(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. 14 FS-ST8B&FS-Br01Digital Proportional Radio Control SystemWebsite 6.3 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. 6.4 FCC SAR 1. The radiated output power of this device is below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact is minimized during normal operation. The exposure standard for wireless devices employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit set by the FCC is 1.6 W/Kg. Tests for SAR are conducted using standard operating positions accepted by the FCC with the device transmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certified power level, the actual SAR level of the device while operating can be well below the maximum value. This is because the device is designed to operate at multiple power levels so as to use only the power required to reach the network. In general, the closer you are to a wireless base station antenna, the lower the power output. To avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna should be minimized. For body worn operation, this device has been tested and meets the FCC RF exposure. Guidelines when used with an accessory designated for this device or when used with an accessory that Contains no metal and that positions the handset a minimum of 0mm from the body. 2. The maximum SAR value is 1.763W/kg when the device used 0mm close to user. Website www.flysky-cn.com Copyright 2023Flysky Technology Co., Ltd. Release date:2023-03-28 FCC IDN4ZST800 FCC ID: 2A2UNBR0100 ManufacturerShenZhen FLYSKY Technology Co., Ltd. Address: 16F, Huafeng Building, No. 6006 Shennan Road, Futian District, Shenzhen, Guangdong, China

17.5MM MADE IN CHINA Model No.: ST8 FCC ID: N4ZST800 Manufacturer: FLYSKY Tech Co.,Ltd Add: 16F Huafeng Building, Futian District, Shenzhen, China. 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. 78.5MM 78.5MM 17.5MM 1MM FS-ST8 FS-ST8

Adobe Illustrator CC2018 20210628 01

78.5MM 17.5MM MADE IN CHINA Model No.: FS-ST8B FCC ID: N4ZST800 Manufacturer: FLYSKY Tech Co.,Ltd Add: 16F Huafeng Building, Futian District, Shenzhen, China. 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. 78.5MM 17.5MM MADE IN CHINA Model No.: FS-ST8B FCC ID: N4ZST800 Manufacturer: FLYSKY Tech Co.,Ltd Add: 16F Huafeng Building, Futian District, Shenzhen, China. 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. 1MM FS-ST8 FS-ST8

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FLYSKY RC MODEL TECHNOLOGY CO., LTD Section 2.911(d)(5)(i) Certification Equipment Type Company name: 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 FCC ID: N4ZST800 Model(s): FS-ST8B 2.911(d)(5)(i) Equipment Type We, [FLYSKY RC MODEL TECHNOLOGY CO., LTD] certify that the equipment for which authorization is sought through certification is not:

Prohibited from receiving an equipment authorization pursuant to 2.903; of the FCC rules. Identified as an equipment type in the Covered ListNOTE 1 Yours sincerely, Signature:

Name: COOL Chen Date: 2023/03/24 Title and Company name: VICE MANEGER / FLYSKY RC MODEL TECHNOLOGY CO., LTD NOTE 1 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

FLYSKY RC MODEL TECHNOLOGY CO., LTD Section 2.911(d)(5)(ii) Certification Applicant (Covered List ) Company name: 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 FCC ID: N4ZST800 Model(s): FS-ST8B 2.911(d)(5)(ii) Applicant filing We, [FLYSKY RC MODEL TECHNOLOGY CO., LTD] certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1on the Covered ListNOTE 2,established pursuant to 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Signature:

Name: COOL Chen Date: 2023/03/24 Title and Company name: VICE MANEGER / FLYSKY RC MODEL TECHNOLOGY CO., LTD NOTE 1 Delete option not applicable to this application. NOTE 2 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

FLYSKY RC MODEL TECHNOLOGY CO., LTD Section 2.911(d)(7) USA Agent for Service of Process Company name: 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 FCC ID: N4ZST800 Model(s): FS-ST8B 2.911(d)(7) USA Designated Agent for Service of Process We, [FLYSKY RC MODEL TECHNOLOGY CO., LTD] designate [Baihetian Innovative Solutions.]NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent:We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation:We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email add ress for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Applicant Company name: Baihetian Innovative Solutions. Address: 6837 Chase Rd, Dearborn, MI 48126, USA FRN: 0033401605 Contact Name: Kenneth Young Telephone No: 313-395-3113 Email: ken.young@baihetiansolutions.com Company name: FLYSKY RC MODEL TECHNOLOGY CO., LTD Address: West building3, Huangjianyuan Ind, Park QIAOLI North Gate Changping Town, Dongguan, China FRN: 0021712245 Contact Name: COOL Chen Telephone No: 0769-86836007 Email: amingc76@163.com Signature:

Signature:

FLYSKY RC MODEL TECHNOLOGY CO., LTD Title: Manager Date: 2023-03-24 Title: VICE MANEGER Date: 2023-03-24 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Letter of Authorization Company: FLYSKY RC MODEL TECHNOLOGY CO., LTD Address: West building3, Huangjianyuan Ind, Park QIAOLI North Gate Changping Town, Dongguan, China Product Type: Digital proportional radio control system Model Number(s): FS-ST8B Product Description: Digital proportional radio control system We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2023-03-24 Name:

COOL Chen Title:

VICE MANEGER Company: FLYSKY RC MODEL TECHNOLOGY CO., LTD

FLYSKY RC MODEL TECHNOLOGY CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2023-03-24 Subject; Request for Confidentiality FCC ID: N4ZST800 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: COOL Chen Title: VICE MANEGER

FLYSKY RC MODEL TECHNOLOGY CO., LTD April 11, 2023 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Attn: OET Dept. Ref:

FCC Class II Permissive change for FCC ID:N4ZST800 Applicant:FLYSKY RC MODEL TECHNOLOGY CO., LTD Dear Examiner, This is to request a Class II Permissive change for FCC ID: N4ZST800 originally granted on 02/13/2022 (date). The change under this application is for the following reasons:

Change list 1ANT2 changed the brass antenna to glue stick antennaBetter performance 2Delete two switches, and the other two add waterproof caps;

3Delete two keys. 4Delete serial model number. Original New FS-ST8/ST8/EX8 FS-ST8B/ST8B I attest that the certified device will not be capable of ad-hoc mode operation outside of the grant conditions. Sincerely, Name: COOL Chen Date: 2023-03-24 Title: VICE MANEGER Signature of applicant

Letter of Authorization Company: FLYSKY RC MODEL TECHNOLOGY CO., LTD Address: West building3, Huangjianyuan Ind, Park QIAOLI North Gate Changping Town, Dongguan, China Product Type: Digital proportional radio control system Model Number(s): FS-ST8, ST8, EX8 Product Description: Digital proportional radio control system We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: 2021-12-14 Name:

COOL Chen Title:

VICE MANEGER Company: FLYSKY RC MODEL TECHNOLOGY CO., LTD

Differences Declaration To whom concern, We company FLYSKY RC MODEL TECHNOLOGY CO., LTD hereby declares: The product models FS-ST8, ST8, EX8are identical in the same PCB layout, interior structure and electrical circuits, the only difference is the model name for commercial purpose. Authorized signature: Date: 2021-12-24

FLYSKY RC MODEL TECHNOLOGY CO., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021-12-14 Subject; Request for Confidentiality FCC ID: N4ZST800 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: COOL Chen Title: VICE MANEGER