RF Exposure Info

FCC ID: 2AL3B-DT-LIGHT

RF Exposure Info

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FCCID_4364062

Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax: +86-755-26648637 Report Template Version: V03 Website: www.cqa-cert.com Report Template Revision Date: Mar.1st, 2017 RF Exposure Evaluation Report Report No. : CQASZ20190600466E-02 Applicant: ShenZhen Doctors of Intelligence & Technology Co.,Ltd. Address of Applicant: 4F,Building 2,Science & Technology Industrial Park,Pingshan Xili, Nanshan District, Shenzhen, China Equipment Under Test (EUT): Product: Smart Light Model No.: DT-light Brand Name: DoHome FCC ID: 2AL3B-DT-LIGHT Standards: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt: 2019-06-13 Date of Test: 2019-06-13 to 2019-06-16 Date of Issue: 2019-06-27 Test Result : PASS* Tested By： (Daisy Qin) Reviewed By: (Aaron Ma ) Approved By: ( Jack Ai) * In the configuration tested, the EUT complied with the standards specified above. The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full.

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190600466E-02 1 Version Revision History Of Report Report No. Version Description Issue Date CQASZ20190600466E-02 Rev.01 Initial report 2019-06-27 Page:2 of 6

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190600466E-02 2 Contents Page 1 VERSION .....................................................................................................................................................................2 2 CONTENTS .................................................................................................................................................................3 3 GENERAL INFORMATION .......................................................................................................................................4 3.1 CLIENT INFORMATION................................................................................................................................................4 3.2 GENERAL DESCRIPTION OF EUT ................................................................................................................................4 4 RF EXPOSURE EVALUATION ................................................................................................................................5 4.1 RF EXPOSURE COMPLIANCE REQUIREMENT ..............................................................................................................5 4.1.1 Limits ..............................................................................................................................................................5 4.1.2 Test Procedure ..............................................................................................................................................5 4.2 1.1.3 EUT RF EXPOSURE EVALUATION ....................................................................................................................6 Page:3 of 6

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190600466E-02 3 General Information 3.1 Client Information Applicant: ShenZhen Doctors of Intelligence & Technology Co.,Ltd. Address of Applicant: 4F,Building 2,Science & Technology Industrial Park,Pingshan Xili, Nanshan District, Shenzhen, China Manufacturer: ShenZhen Doctors of Intelligence & Technology Co.,Ltd. Address of Manufacturer: 4F,Building 2,Science & Technology Industrial Park,Pingshan Xili, Nanshan District, Shenzhen, China 3.2 General Description of EUT Product Name: Smart Light Model No.: DT-light Trade Mark: DoHome Hardware version： V1.4 Software version： V1.5 Operation Frequency: IEEE 802.11b/g/n(HT20): 2412MHz to 2462MHz Channel Numbers: IEEE 802.11b/g, IEEE 802.11n HT20: 11 Channels Channel Separation: 5MHz Type of Modulation: IEEE for 802.11b: DSSS(CCK,DQPSK,DBPSK) IEEE for 802.11g : OFDM(64QAM, 16QAM, QPSK, BPSK) IEEE for 802.11n(HT20) : OFDM (64QAM, 16QAM, QPSK,BPSK) Transfer Rate: IEEE for 802.11b: 1Mbps/2Mbps/5.5Mbps/11Mbps IEEE for 802.11g : 6Mbps/9Mbps/12Mbps/18Mbps/24Mbps/36Mbps/48Mbps/54Mbps IEEE for 802.11n(HT20) : 6.5Mbps/13Mbps/19.5Mbps/26Mbps/39Mbps/52Mbps/58.5Mbps/65Mbps Product Type: Mobile Portable Fix Location Test Software of EUT: RF test (manufacturer declare ) Antenna Type: PCB antenna Antenna Gain: 0dBi Power Supply: AC120V/60Hz Page:4 of 6

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190600466E-02 4 RF Exposure Evaluation 4.1 RF Exposure Compliance Requirement 4.1.1 Limits According to FCC Part1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in part1.1307(b) F= Frequency in MHz Friis Formula 2 Friis transmission formula: Pd = (Pout*G)/(4* Pi * R ) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. 4.1.2 Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Page:5 of 6

Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20190600466E-02 4.2 1.1.3 EUT RF Exposure Evaluation 1) For WIFI ANT1: Antenna Gain: 0dBi Antenna Gain: The maximum Gain measured in fully anechoic chamber is 1.0 in linear scale. Output Power Into Antenna & RF Exposure Evaluation Distance: Measurement Data 802.11b mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2412MHz) 12.63 12.5±1 13.5 22.387 Middle(2437MHz) 13.15 13.0±1 14.0 25.119 Highest(2462MHz) 13.46 13.0±1 14.0 25.119 802.11g mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (dBm) (mW) Lowest(2412MHz) 12.37 12.0±1.0 13.0 19.953 Middle(2437MHz) 12.56 12.5±1.0 13.5 22.387 Highest(2462MHz) 13.1 13.0±1.0 14.0 25.119 802.11n(HT20)mode Tune up tolerance Maximum tune-up Power Test channel Average Output Power (dBm) (dBm) (mW) (dBm) Lowest(2412MHz) 12.45 12.0±1.0 13.0 19.953 Middle(2437MHz) 12.79 12.5±1.0 13.5 22.387 Highest(2462MHz) 12.54 12.5±1.0 13.5 22.387 The worst case: Maximum tune-up Antenna Power Limit Result Power Gain Density (mW) (dBi) at R = 20 cm 2 (mW/cm ) 25.119 0 0.005 1.0 PASS Note: 1) Refer to report No. CQASZ20190600466E-01 for EUT test Max Conducted average Output Power value. 2 2 2) Pd = (Pout*G)/(4* Pi * R )=(25.119*1.0)/(4*3.1416*20 )=0.005 Page:6 of 6


Document Created: 2019-07-17 11:12:48
Document Modified: 2019-07-17 11:12:48
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