RF Exposure

FCC ID: 2AT92-TSL-A03

RF Exposure Info

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FCCID_4437043

EXPOSURE REPORT FCC ID: 2AT92-TSL-A03 Date of issue: Sept. 02, 2019 Report Number: MTi19070909-5E2 Sample Description: Car Fast Wireless Charger Model(s): TSL-A03 Applicant: Shenzhen Tianli Electronics Co., Ltd. Address: 7th Floor, Building G, Debaoli Industrial Zone, Jihua Road, Putian Street, Longgang District, Shenzhen Date of Test: Aug. 08, 2019 – Aug. 16, 2019 Shenzhen Microtest Co., Ltd. http://www.mtitest.com

Table of Contents Applicant’s name: Shenzhen Tianli Electronics Co., Ltd. 7th Floor, Building G, Debaoli Industrial Zone, Jihua Road, Putian Address: Street, Longgang District, Shenzhen Manufacture's name: Shenzhen Tianli Electronics Co., Ltd. 7th Floor, Building G, Debaoli Industrial Zone, Jihua Road, Putian Address: Street, Longgang District, Shenzhen Product name: Car Fast Wireless Charger Trademark: SROTEK Model name: TSL-A03 Standard: FCC CFR 47 PART 1 , 1.1310 RF Exposure Procedures: KDB 680106 D01 RF Exposure Wireless Charging App v03 This device described above has been tested by Shenzhen Microtest Co., Ltd. and the test results show that the equipment under test (EUT) compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Tested by: Demi Mu Aug. 16, 2019 Reviewed by: Blue Zheng Sept. 02, 2019 Approved by: Smith Chen Sept. 02, 2019

1 General Information 1.1 Description of EUT Product name: Car Fast Wireless Charger Brand name: SROTEK Model name: TSL-A03 Series model: N/A Deference in serial model: N/A Operation frequency: 115–205 kHz Operational mode: Wireless charging Modulation type: Load modulation Antenna type: Coil antenna Power source: DC 5V/9V from adapter Battery: N/A Adapter information: N/A 1.2 Ancillary equipment list Equipment Model S/N Manufacturer Huizhou Dongyang Yienbi Adapter EQ-24BCN / Electronics Co., Ltd. Load / / / 1.3 Measurement uncertainty Measurement Uncertainty for a Level of Confidence of 95 %, U=2xUc(y) Radiated emission(150kHz~30MHz) ± 2.5 dB Radiated emission(30MHz~1GHz) ± 4.2 dB Radiated emission (above 1GHz) ± 4.3 dB Temperature ±1 degree Humidity ±5 %

2 Testing site Test Site Shenzhen Microtest Co., Ltd No.102A & 302A, East Block, Hengfang Industrial Park, Xingye Test Site Location Road, Xixiang, Bao'an District, Shenzhen, Guangdong, China FCC Registration No.: 448573

3 List of test equipment Equipment Equipment Serial Calibration Manufacturer Model Due date No. Name No. date Narda Safety Broadband NBM- MTI-E068 Test Solutions D-1699 2019/4/17 2021/4/16 Field Meter 520 GmbH Narda Safety MTI-E069 Probe E-Field EF0691 H-0571 2019/4/17 2021/4/16 Test Solutions

4 Test Results 4.4 Maximum permissible exposure 4.4.1 Limit Frequency Electric field Magnetic field Power Averaging range(MHz) strength(V/m) strength(A/m) density(mW/cm2) time(minutes) (A) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 6 3.0-30 1842/f 4.89/f *900/f2 6 30-300 61.4 0.163 1.0 6 6 300-1500 f/300 6 1500-100000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *100 30 1.34-30 824/f 2.19/f *180/f2 30 30-300 27.5 0.073 0.2 30 300-1500 f/1500 30 1500-100000 1 30 f = frequency in MHz * = Plane-wave equivalent power density 4.4.2 Test Procedures E and H-field measurements should be made with the center of the probe at a distance of 15 cm surrounding the device and 20 cm above the top surface of the primary/client pair. These measurements should be repeated for three different client battery levels, 1%, 50%, and 99%. Record the test results. KDB 680106 D01 RF Exposure Wireless Charging App v03: (1) Power transfer frequency is less than 1MHz. (2) Output power from each primary coil is less than or equal to 15 watts. (3) The transfer system includes only single primary and secondary coils. This includes charging systems that may have multiple primary coils and clients that are able to detect and allow coupling only between individual pairs of coils. (4) Client device is placed directly in contact with the transmitter. (5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion). (6) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. Note: The device is in compliance with KDB 680106 D01 RF Exposure Wireless Charging App v03 6 conditions.

4.4.3 Test Setup Top Side Back Side Left Side 15cm Field Probe Right Side Front Side Bottom Side

4.4.4 Test Result Maximum permissible Exposure Battery Test E– Test sides H–field(A/m) levels distance(cm) field(V/m) <1% Top 20 0.426 0.116 <1% Bottom 15 0.421 0.111 <1% Left 15 0.424 0.114 <1% Right 15 0.425 0.110 <1% Front 15 0.419 0.105 <1% Back 15 0.420 0.109 Limit 614 1.63 Margin Limit (%) 0.069% 7.117% Maximum permissible Exposure Battery Test E– Test sides H–field(A/m) levels distance(cm) field(V/m) <50% Top 20 0.424 0.123 <50% Bottom 15 0.417 0.116 <50% Left 15 0.413 0.112 <50% Right 15 0.414 0.119 <50% Front 15 0.418 0.111 <50% Back 15 0.412 0.117 Limit 614 1.63 Margin Limit (%) 0.069% 7.546% Maximum permissible Exposure Battery Test E– Test sides H–field(A/m) levels distance(cm) field(V/m) <99% Top 20 0.430 0.117 <99% Bottom 15 0.427 0.108 <99% Left 15 0.422 0.115 <99% Right 15 0.428 0.102 <99% Front 15 0.421 0.112 <99% Back 15 0.426 0.115 Limit 614 1.63 Margin Limit (%) 0.070% 7.178% Note1: The product supports three coils. It can work with any single coil or double coils, but not with three coils. The report only shows the worst mode: double coil. The 5V and 9V operating voltages have been tested and the results show that the 9V operating voltage data is the worst, and the report only shows the worst mode.

4.4.5 MPE Setup photo

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Document Created: 2019-09-06 18:49:05
Document Modified: 2019-09-06 18:49:05
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