2A39G-YET2128CFour-channel wireless receiving controller

YET2128C Remote control manual 1. Wireless transmitting power：<0dbm； 2. Rf open band, no need to apply frequency point, carrier frequency433.92MHz； 3. Modulation method: ASK/OOK 4. In case of line-of-sight, reliable transmission distance：>50 meters； 5. Low power consumption，3.0V @ 433.92MHZ，<18mA。 Name parameter Unit Minimum Type Maximum Electrical properties(25°C) Supply voltage 6 V Emission current 18 mA Static current 0 uA RF performance（25°C） Working frequency 433.92 MHz Transmission power 0 dBm Baud rate 1.4 kHZ General performance Working temperature -20 60 °C 6. Function: This product code format is HCS300 roll code, there are four keys, operation of each key issued by a different key value. FCC warning statements: 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 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. The device has been evaluated to meet general RF exposure requirement.

January 19, 2022 Nemko Canada Inc 303 River Road Ottawa, Ontario, Canada K1V 1H2 Attn: Director of Certification Authority to Act as Agent On our behalf, I appoint Shenzhen Alpha Product Testing Co., Ltd. Address: Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China Person: Mark Zhu (Name and address，person). to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko Canada Inc, still resides with Shenzhen Yaoertai Technological Development Co., LTD Address: 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China ( applicant name and address). Signature: Name Jun wen Yang Position General manager Company Name Shenzhen Yaoertai Technological Development Co., LTD Address 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China Tel 86-755-89509951 Fax 86-755-28445133 Email [email protected]

January 19, 2022 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A39G-YET2128C Product Name: Four-channel wireless receiving controller Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics Long-term confidential  Block diagram Long-term confidential  Operation description Long-term confidential These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signature: Name Jun wen Yang Position General manager Company Name Shenzhen Yaoertai Technological Development Co., LTD Address 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China Tel 86-755-89509951 Fax 86-755-28445133 Email [email protected]

Differences Description We Shenzhen Yaoertai Technological Development Co., LTD. state: Product name: Four-channel wireless receiving controller Model: YET2128C, YET404PC-V4.0 All model’s the function, software and electric circuit are the same, except the model numbers difference. Signature: Name Jun wen Yang Position General manager Company Name Shenzhen Yaoertai Technological Development Co., LTD Address 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China Tel 86-755-89509951 Fax 86-755-28445133 Email [email protected]

FCC ID: 2A39G-YET2128C

Label Size: 2.0x0.8cm Location FCC ID: 2A39G-YET2128C Shenzhen Yaoertai Technological Development Co., LTD Four-channel wireless receiving controller Model No.: YET2128C

FCC ID: 2A39G-YET2128C Antenna

FCC ID: 2A39G-YET2128C RF Exposure evaluation According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison eirp = pt x gt = (EXd) 2 /30 where: pt = transmitter output power in watts, gt = numeric gain of the transmitting antenna (unitless), E = electric field strength in V/m, --- 10 ((dBuV/m)/20) /10 6 d = measurement distance in meters (m)---3m So pt = (EXd) 2 /30 x gt For Worst case Mode: 433.92MHz Field strength =75.84 dBuV/m @3m Ant gain 0 dBi; so Ant numeric gain=1 So pt= {[10 (75.74/20) /10 6 x3] 2 /30x1} x 1000 mW =0.0115 mW So (0.0115mW/5mm) x √0.43392GHz = 0.0015<3 Then SAR evaluation is not required

FCC TEST REPORT FCC ID: 2A39G-YET2128C On Behalf of Shenzhen Yaoertai Technological Development Co., LTD Four-channel wireless receiving controller Model No.: YET2128C, YET404PC-V4.0 Prepared for : Shenzhen Yaoertai Technological Development Co., LTD Address : 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China Prepared By : Shenzhen Alpha Product Testing Co., Ltd. Address : Building i, No.2, Lixin Road, Fuyong Street, Bao’an District, 518103, Shenzhen, Guangdong, China Report Number : A2111015-C01-R01 Date of Receipt : November 19, 2021 Date of Test : November 21, 2021-January 5, 2022 Date of Report : January 5, 2022 Version Number : V0 Page 2 of 29 Report No.: A2111015-C01-R01 Contents 1. General Information ............................................................................................................... 5 1.1. Description of Device (EUT) ...............................................................................5 1.2. Accessories of Device (EUT)...............................................................................6 1.3. Tested Supporting System Details .......................................................................6 1.4. Test Facility ..........................................................................................................6 2. Summary of test ...................................................................................................................... 7 2.1. Summary of test result .........................................................................................7 2.2. Block Diagram .....................................................................................................7 2.3. Test mode .............................................................................................................8 2.4. Test Conditions .....................................................................................................8 2.5. Measurement Uncertainty (95% confidence levels, k=2) ....................................8 2.6. Test Equipment .....................................................................................................9 3. Radiation Emission ............................................................................................................... 10 3.1. Radiation Emission Limits(15.209&231) ..........................................................10 3.2. Test Setup ...........................................................................................................10 3.3. Test Procedure .................................................................................................... 11 3.4. Test Equipment Setting For emission test. .........................................................12 3.5. Test Condition ....................................................................................................12 3.6. Test Result ..........................................................................................................12 4. Power line conducted emission ............................................................................................ 16 4.1. Conducted Emission Limits (15.209) ................................................................16 4.2. Test Setup ...........................................................................................................16 4.3. Test Procedure ....................................................................................................16 4.4. Test Results ........................................................................................................17 5. Occupied bandwidth ............................................................................................................. 18 5.1. Test limit .............................................................................................................18 5.2. Method of measurement .....................................................................................18 5.3. Test Setup ...........................................................................................................18 5.4. Test Results ........................................................................................................18 6. Transmission time ................................................................................................................. 20 6.1. Test limit .............................................................................................................20 6.2. Method of measurement .....................................................................................20 6.3. Test Setup ...........................................................................................................20 6.4. Test Results ........................................................................................................20 7. Antenna Requirement .......................................................................................................... 22 7.1. Standard Requirement ........................................................................................22 7.2. Antenna Connected Construction ......................................................................22 7.3. Result..................................................................................................................22 8. Test setup photo .................................................................................................................... 23 9. Photos of EUT ....................................................................................................................... 24 Page 3 of 29 Report No.: A2111015-C01-R01 TEST REPORT DECLARATION Applicant : Shenzhen Yaoertai Technological Development Co., LTD Address : 6th Floor block 27, Lianchuang Technical Zone, bulan road, Longgang district, Shenzhen, China Manufacturer : Shenzhen Yaoertai Technological Development Co., LTD Address : 6th Floor b…

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FCC ID: 2A39G-YET2128C Photos of Radiated emission