FCC ID: QH9R13KR4 2.4G RC Set (TRX)

2.4GHz XT 2.4GHz XT compatible micro receiver KR-420XT Instruction Manual Pairing At this time we would like to thank you for purchasing the KR-420XT. Please read this instruction manual before using this product. Also please read the KR-420XT instruction manual of the transmitter being used. Also,these infrmation for products may be changed without anaunncement. Please understand with advance. For your safety Please note the handling and use of this product. Warning The contents of this display show a possibility of death or where a serious injury may occur Warning or a highly substantial damaging a Warning accident may occur. This product is manufactured for surface use radio controls. *Discontinue use for all other purposes. Discontinue use in the event of a thunder storm.

*There is danger of a lightening bolt striking the antenna of the transmitter. Discontinue use when consuming alcohol or medication that may hinder concentration or judgment. *Unexpected accidents are caused with a judgment mistake. When rain and puddles are present, please discontinue use. *There are times when water enters into the equipment and control will be lost. Only use the batteries specied in the instruction manual of the transmitter. To turn the system on, start by turning on the transmitter then the receiver. To turn o the system, turn o the receiver rst, then the transmitter in this sequence. Please be sure to use only our products for the transmitter and servos. *Concerning the damage and the like, which is generated when combining products that are not our company's genuine products we do not owe responsibility. Altering the transmission module is inhibited by law and is subjected to penal code violations. Resolution remodeling of all products may result in the cause of a short and other accidents. In addition, if this product is altered we will refuse repair service. Please do not use this product inside an airplane, hospital, near any automatic control equipment, medical electrical machinery and apparatus such as re alarms. In addition with respect to the law, if this product eects other radio equipment and electronic equipment, use must be discontinued at once. Attention This displays shows the possibility or a substantially damaging accident which can cause Attention injury. Please avoid storage in a place of high temperatures and high humidity because it may cause the breakdown,damage and deformation of the product. Please note when using with an engine model, place where exhaust and the waste oil will not come into contact with the product. *In case of submerging in oil or water, please send it out for repair. This product's performance is designed for use in the shown specied usage which is based on this instruction manual and the instruction manual of the transmitter which is used. When the instructions are not understood, please contact our service department for advise. After verifying the safety of use, think of all the accidents possible and please enjoy with responsibility. Our company cannot owe responsibility from the nature of the radio control models And the customer assumes all responsibilities that result from this product being used. 2.4GHz ( ) Summary of this product 1. 2.4GHz FHSS micro receiver It is the smallest, lightest receiver in this class. 1.2.4GHz

*Refer to the installation instructions below. Name of parts Compatible for Two ways communication You can use sensors and device which are compatible for compatible for two ways communications. 2. 2. You can change device setting value 3.ICS which support REAL TIME ICS without turn o power. 3. REAL TIME ICS support. Features St up button LED LED Prepare the transmitter (or module) for the pair process. Please read the instruction manual of the compatible transmitter or module. While pushing the set button on the receiver, turn the power source ON, or push the setup button when had powered on. Release the set button when the LED lamp of the receiver lights up. Once it goes out, it will illuminate again and the pairing will be complete. If the LED is flashing or dim, please try to set again. Push set up button LED LED Please quit pairing mode of the transmitter. Receiver is change to normal working automaticaly after pairing. connect power LED Please distance at least 1m from the transmitter. Set up for fail safe Setup steps 1, Turn on the transmitte and receiver. 2,Operate and hold trigger to the position of fail safe. 3,Push st-up button on the receivew

,Please release set-up button ,when LED are light off. LED Light off LED

,LED is light on again. Fail safe setting are finished. Please be sure to check this setting is correct or not. Device for can useing The following products can be used by connecting to this product. In addition, our operation guarantee is only for our products. If it is a product of another company, please use it at your own risk. 1, PWM compatible servo and speed controller PWM It is a product sold for general radio control. Products that are currently maintainable are eligible. Please note that operation is not guaranteed for products that have already been excluded from maintenance. Servo products of RSX3 / BSx3 series and later can operate in HCS mode, which is more responsive than RSX3BSxPWMHCS conventional PWM compatible products. Servos and other equipment with serial mode can operate even faster than HCS. HCS In the mode that enables two-way communication, various sensors that will be released in the future for acquiring information on the receiver side can be connected. 4 3 2 1 B Specfications Antenna When a channel is not in use and to prevent dirt and dust, attach the provided connector cap. RF mode: 2.4GHz XT methot. HCS/Normal /Serial are supported. Except serial are maximum 4 channels.Serial is maximum 8ID. Fail safe 2.4GHz XTHCS/()8 function. operation voltage: 4.8 to 7.4V Dimentions: 30.9. x 18.4 x 5cm Weight: 5.8g(Normal antenna) 5.4g(short antenna) 4.8V7.4V30.9 x 18.4 x 13.5 mm5.8 g(5.4g Compatible Transmitter:EX-NEXT. Can not use with FHSS or DS mehod radios. EX-NEXTFHSSDS 2, HCS compatible products HCS 1 2 3 4 B/S 4 : Servo or ESC are connected. 3 : Servo or ESC are connected. 1:

2 : Throttle servo or ESC are connected. 2:

1 : Steering servo is connected. 3:

B/S : Battery or serial compatible 4:

devices are can connected. B/S:

3, Serial mode compatible products 4, Bidirectional mode compatible sensor Installation Installing the Antenna highest position available. Please use plastic mounts and a plastic antenna tube. Please keep the antenna wire elevated to the Please do not use a metal antenna mount because it will create problems. To protect the main antenna, insert the antenna into the antenna tube. The short anten is can be install to receivers case directly. Antenna tip 3cm (silver wire) is the cm() working part of the antenna. Do not disconnect or cut the antenna. For the prevention of the loss of the antenna tube, use adhesive to secure. Antenna Installation Location Please keep distance to the receiver site, due to noise sources ofthe battery, motor, ESC, etc. If possible. For FCC

Antenna 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 HCS

(2) this device must accept any interference received, including interference that may cause RSx3/BSx3 undesired operation. HCS HCS Changes or modifications not expressly approved by the party response for compliance could void the users authority to operate the equipment. About Repairs When breakdown repair it is requested, please report the breakdown status in as much detail as possible. By noting the problem, repairs are performed quicker. When you believe you have a breakdown. Please refer to your manual once more and please inspect. When you do not understand something, please inquire our service department. When inquiring to our service department about a breakdown, please include in as much detail as possible of the contents mentioned below about your problem. Name of products (battery, car, transmitter & motor) used. When breaking down, usage condition and description of breakdown condition. Your address, name and telephone number. When a repair is being requested, please be sure to send the memo which includes the above-mentioned contents in as much detail as possible. 116-0014 4-17-7 KONDO KAGAKU CO.,LTD. 4-17-7 Higashi-Nippori, Arakawa-ku, Tokyo Japan Phone : +81-03-3807-7648 Website : https://www.kopropo.co.jp 03-3807-7648 900 12001300 1700 www.kopropo.co.jp

KR-420XT FCC Label 14mm 10mm Original dimension 5mm x 2 dimension Position Bottom of case The FCC Statement is can not disiplay in this space. So, FCC statement will be displayed in the manual.

KONDO KAGAKU CO.,LTD TEL 81-3-3807-7751 FAX 81-3-3807-8155 4-17-7Higashi-Nippori Arakawa-ku, Tokyo 116-0014 JAPAN To Whom It May Concern:

Please be advised that Applicant Name:

Address:

City:

Country:

KONDO KAGAKU CO.,LTD. 4-17-7 Higashi-Nippori Arakawa-ku Tokyo Japan authorizes, Felicia Chan, Assistant Engineer at TV Rheinland Hong Kong Ltd. to act on our behalf, until otherwise notified, for applications submitted to a Telecommunication Certification Body (TCB) recognized by the FCC. We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse ACT of 1988, U.S.C.862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you for your attention to this matter. Signature:

Name:

Title:

Koji Akiyama Developement C:\Users\katsu\Desktop\EX-NEXT CE\Authorization letter_draft_20210506.docx Page 1 / 1

KONDO KAGAKU CO.,LTD TEL 81-3-3807-7751 FAX 81-3-3807-8155 4-17-7Higashi-Nippori Arakawa-ku, Tokyo 116-0014 JAPAN 4-17-7 Higashi-nippori, Arakaw-ku Tokyo Japan Applicant Name: KONDO KAGAKU CO.,LTD. Address:

City:

Country:

Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to 47 CFR Section 0.457 and 0.459, the applicant hereby requests non-disclosure and confidential treatment of the following materials submitted in support of FCC certification application for FCC ID: QH9T56DEX Bill(s) of Material Block Diagrams Operational Description Schematic Diagrams The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Signature:

Name:

Title:

Date:

Koji Akiyama Developement 24th of Nov 2020 C:\Users\katsu\Desktop\EX-NEXT CE\\\Confidentiality letter_FCC_20210407.docx Page 1 / 1

Declaration of Equivalence We, the undersigned, hereby declare that the product No.21013 KR-420XT(Normal Antenna) is identical in construction including schematics, PCB layout and electronic components to the model No.21014 KR-420XT(Short Antenna) except its shield wire length with the tested item. The housing cannot be opened without using a specific tool. The differences between the modified equipment and original equipment are listed below. Main EUT Rest of multiple models Product name KR-420XT(Normal Antenna) KR-420XT(Short Antenna) Identification

(Model Number) 21013 21014 Manufacture KONDO KAGAKU CO., LTD. KONDO KAGAKU CO., LTD. Difference of modified

Different model number for equipment marketing consideration KONDO KAGAKU CO., LTD.