FCC Test Report

Applicant Information

Applicant: Shenzhen Qianyan Technology LTD

Address: No. 3301, Block C, Section 1, Chuangzhi Yuncheng Building, Liuxian Avenue, Xili Community, Xili Street, Nanshan District, Shenzhen, 518000, China

Manufacturer: Shenzhen Qianyan Technology LTD

Address: No. 3301, Block C, Section 1, Chuangzhi Yuncheng Building, Liuxian Avenue, Xili Community, Xili Street, Nanshan District, Shenzhen, 518000, China

Product Information

Product Name: Govee Christmas String Lights 2 / Govee Christmas String Lights 2S

Model Numbers: H70C7, H70C4, H70C5, H80C4, H80C5

Trade Mark: Govee

Rating(s): H70C7 Input: 24V-1.5A; H70C4, H80C4 Input: 5V-3A; H70C5, H80C5 Input: 24V-1.5A

Test Standards and Dates

Test Standard(s): 47 CFR Part 15.247, ANSI C63.10-2020, KDB 558074 D01 15.247 Meas Guidance v05r02

Date of Receipt: Jan. 20, 2025

Date of Test: Jan. 20, 2025 ~ Feb. 12, 2025

Prepared By: Cecilia Chen

Approved & Authorized Signer: Hugo Chen

Revision History

Report Version: R00

Description: Original Issue. (Note 1)

Note 1: This is a Class II application which was based on the original report 18220WC40034602. The difference between the original device and current one described as following: 1. Add models: "H80C5". The changes are not related with the other RF parameters, only conducted emission and radiation spurious emission were retested for model "H80C5".

General Information

1.1. Client Information

Applicant: Shenzhen Qianyan Technology LTD

Address: No. 3301, Block C, Section 1, Chuangzhi Yuncheng Building, Liuxian Avenue, Xili Community, Xili Street, Nanshan District, Shenzhen, 518000, China

1.2. Description of Device (EUT)

Product Name: Govee Christmas String Lights 2/Govee Christmas String Lights 2S

Model No.: H70C7, H70C4, H70C5, H80C4, H80C5 (Note: According to the model differences on page 6.)

Trade Mark: Govee

Test Power Supply: AC 120V/60Hz for Adapter

Test Sample No.: H80C5: 1-1-1(Normal Sample)

RF Specification

Operation Frequency: 802.11b/g/n(HT20): 2412MHz to 2462MHz

Number of Channel: 802.11b/g/n(HT20): 11 Channels

Modulation Type: 802.11b: DSSS(CCK, DQPSK, DBPSK); 802.11g: OFDM(BPSK, QPSK, 16QAM, 64QAM); 802.11n(HT20): OFDM (BPSK, QPSK, 16QAM, 64QAM)

Antenna Type: PCB antenna

Antenna Gain(Peak): 1.54dBi

Remark: (1) All of the RF specification are provided by customer. (2) For a more detailed features description, please refer to the manufacturer's specifications or the User's Manual.

Model Differences

Note: The repeater appearance, product name and PCB board are different from "H70C5". (H80C5 is changed to gluing)

Auxiliary Equipment Used During Test

Operation Channel List

Operation Band:

Description of Test Modes

Measurement Uncertainty

The measurement uncertainty and decision risk evaluated according to AB/WI-RF-F-032. This uncertainty represents an expanded uncertainty expressed at approximately the 95% confidence level using a coverage factor of k=2.

Test Summary

Note: P: Pass, N: N/A, not applicable

Description of Test Facility

The test facility is recognized, certified, or accredited by the following organizations:

FCC-Registration No.: 434132

Shenzhen Anbotek Compliance Laboratory Limited, EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. Registration No. 434132.

ISED-Registration No.: 8058A

Shenzhen Anbotek Compliance Laboratory Limited, EMC Laboratory has been registered and fully described in a report filed with the (ISED) Innovation, Science and Economic Development Canada. The acceptance letter from the ISED is maintained in our files. Registration 8058A.

Test Location

Shenzhen Anbotek Compliance Laboratory Limited.

Sogood Industrial Zone Laboratory & 1/F. of Building D, Sogood Science and Technology Park, Sanwei Community, Hangcheng Subdistrict, Bao'an District, Shenzhen, Guangdong, China.

Disclaimer

1. The test report is invalid if not marked with the signatures of the persons responsible for preparing and approving the test report.
2. The test report is invalid if there is any evidence and/or falsification.
3. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein.
4. This document may not be altered or revised in any way unless done so by Anbotek and all revisions are duly noted in the revisions section.
5. Content of the test report, in part or in full, cannot be used for publicity and/or promotional purposes without prior written approval from the laboratory.
6. The authenticity of the information provided by the customer is the responsibility of the customer and the laboratory is not responsible for its authenticity.

The laboratory is only responsible for the data released by the laboratory, except for the part provided by the applicant.

Test Equipment List

Conducted Emission at AC power line

Maximum Conducted Output Power

Emissions in frequency bands (above 1GHz)

Emissions in frequency bands (below 1GHz)

2. Antenna Requirement

Test Requirement:

Refer to 47 CFR Part 15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. The use of a permanently attached antenna or of an antenna that uses a unique coupling to the intentional radiator shall be considered sufficient to comply with the provisions of this section.

2.1. Conclusion

The antenna is a PCB antenna which permanently attached, and the best case gain of the antenna is 1.54dBi. It complies with the standard requirement.

3. Conducted Emission at AC Power Line

Test Requirement:

Refer to 47 CFR 15.207(a), Except as shown in paragraphs (b)and (c)of this section, for an intentional radiator that is designed to be connected to the public utility (AC) power line, the radio frequency voltage that is conducted back onto the AC power line on any frequency or frequencies, within the band 150 kHz to 30 MHz, shall not exceed the limits in the following table, as measured using a 50 µH/50 ohms line impedance stabilization network (LISN).

Test Limit:

*Decreases with the logarithm of the frequency.

Test Method:

ANSI C63.10-2020 section 6.2

Procedure:

Refer to ANSI C63.10-2020 section 6.2, standard test method for ac power-line conducted emissions from unlicensed wireless devices

3.1. EUT Operation

Operating Environment:

Test mode: 1: 802.11b mode: Keep the EUT in 802.11b transmitting mode. 2: 802.11g mode: Keep the EUT in 802.11g transmitting mode. 3: 802.11n(HT20) mode: Keep the EUT in 802.11n(HT20) transmitting mode.

3.2. Test Setup

[Diagram description: Test setup showing EUT, LISN, Test Receiver, and Peripheral connected with cables. Distances are indicated: 0.8m, 0.1m.]

3.3. Test Data

Temperature: 22.1 °C, Humidity: 50 %, Atmospheric Pressure: 101 kPa

TM2 / Line: Line / Band: 2400-2483.5 MHz / BW: 20 / CH: H

TM2 / Line: Neutral / Band: 2400-2483.5 MHz / BW: 20 / CH: H

Note: Only record the worst data in the report.

4. Maximum Conducted Output Power

Test Requirement:

47 CFR 15.247(b)(3)

Test Limit:

Refer to 47 CFR 15.247(b)(3), For systems using digital modulation in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands: 1 Watt. As an alternative to a peak power measurement, compliance with the one Watt limit can be based on a measurement of the maximum conducted output power. Maximum Conducted Output Power is defined as the total transmit power delivered to all antennas and antenna elements averaged across all symbols in the signaling alphabet when the transmitter is operating at its maximum power control level. Power must be summed across all antennas and antenna elements. The average must not include any time intervals during which the transmitter is off or is transmitting at a reduced power level. If multiple modes of operation are possible (e.g., alternative modulation methods), the maximum conducted output power is the highest total transmit power occurring in any mode.

Test Method:

ANSI C63.10-2020, section 11.9.2

Procedure:

ANSI C63.10-2020, section 11.9.2 Maximum conducted (average) output power

4.1. EUT Operation

Operating Environment:

Test mode: 1: 802.11b mode: Keep the EUT in 802.11b transmitting mode. 2: 802.11g mode: Keep the EUT in 802.11g transmitting mode. 3: 802.11n(HT20) mode: Keep the EUT in 802.11n(HT20) transmitting mode.

4.2. Test Setup

[Diagram description: Test setup showing EUT and Spectrum Analyzer.]

4.3. Test Data

Temperature: 25.3 °C, Humidity: 48 %, Atmospheric Pressure: 101 kPa

Note: For pre-scan, the result is equal to original, so the original data is referenced.

5. Emissions in Frequency Bands (below 1GHz)

Test Requirement:

Refer to 47 CFR 15.247(d), In addition, radiated emissions which fall in the restricted bands, as defined in § 15.205(a), must also comply with the radiated emission limits specified in § 15.209(a)(see § 15.205(c)).`

Test Limit:

** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this part, e.g., §§ 15.231 and 15.241.

In the emission table above, the tighter limit applies at the band edges. The emission limits shown in the above table are based on measurements employing a CISPR quasi-peak detector except for the frequency bands 9-90 kHz, 110-490 kHz and above 1000 MHz. Radiated emission limits in these three bands are based on measurements employing an average detector.

Test Method:

ANSI C63.10-2020 section 6.6.4

Procedure:

ANSI C63.10-2020 section 6.6.4

5.1. EUT Operation

Operating Environment:

Test mode: 1: 802.11b mode: Keep the EUT in 802.11b transmitting mode. 2: 802.11g mode: Keep the EUT in 802.11g transmitting mode. 3: 802.11n(HT20) mode: Keep the EUT in 802.11n(HT20) transmitting mode.

5.2. Test Setup

[Diagram description: Test setup for radiated emissions, showing EUT, test table, turntable, RX Antenna, Spectrum Analyzer/Receiver, Pre-Amplifier. Distances are indicated: 3m, 1~4m, 0.8m, 1.5m.]

5.3. Test Data

The test results of 9kHz-30MHz was attenuated more than 20dB below the permissible limits, so the results don't record in the report.

TM2 / Polarization: Horizontal / Band: 2400-2483.5 MHz / BW: 20 / CH: H

TM2 / Polarization: Vertical / Band: 2400-2483.5 MHz / BW: 20 / CH: H

Note: Only record the worst data in the report.

6. Emissions in Frequency Bands (above 1GHz)

Test Requirement:

In addition, radiated emissions which fall in the restricted bands, as defined in § 15.205(a), must also comply with the radiated emission limits specified in § 15.209(a)(see § 15.205(c)).`

Test Limit:

** Except as provided in paragraph (g), fundamental emissions from intentional radiators operating under this section shall not be located in the frequency bands 54-72 MHz, 76-88 MHz, 174-216 MHz or 470-806 MHz. However, operation within these frequency bands is permitted under other sections of this part, e.g., §§ 15.231 and 15.241.

In the emission table above, the tighter limit applies at the band edges. The emission limits shown in the above table are based on measurements employing a CISPR quasi-peak detector except for the frequency bands 9-90 kHz, 110-490 kHz and above 1000 MHz. Radiated emission limits in these three bands are based on measurements employing an average detector.

Test Method:

ANSI C63.10-2020 section 6.6.4

Procedure:

ANSI C63.10-2020 section 6.6.4

6.1. EUT Operation

Operating Environment:

Test mode: 1: 802.11b mode: Keep the EUT in 802.11b transmitting mode. 2: 802.11g mode: Keep the EUT in 802.11g transmitting mode. 3: 802.11n(HT20) mode: Keep the EUT in 802.11n(HT20) transmitting mode.

6.2. Test Setup

[Diagram description: Test setup for radiated emissions, showing EUT, test table, turntable, RX Antenna, Spectrum Analyzer/Receiver, Pre-Amplifier. Distances are indicated: 3m, 1~4m, 1.5m.]

6.3. Test Data

Temperature: 25.3 °C, Humidity: 48 %, Atmospheric Pressure: 101 kPa

TM2 / CH: L

Peak value:

Average value:

TM2 / CH: M

Peak value:

Average value:

TM2 / CH: H

Peak value:

Average value:

Remark: 1. Result =Reading + Factor

2. "*" means the test results were attenuated more than 20dB below the permissible limits, so the results don't record in the report.

3. Only the worst case is recorded in the report.

Appendices

APPENDIX I -- TEST SETUP PHOTOGRAPH: Please refer to separated files Appendix I -- Test Setup Photograph_RF

APPENDIX II -- EXTERNAL PHOTOGRAPH: Please refer to separated files Appendix II -- External Photograph

APPENDIX III -- INTERNAL PHOTOGRAPH: Please refer to separated files Appendix III -- Internal Photograph