RF Exposure

FCC ID: 2AIXN-BS220HA

RF Exposure Info

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FCCID_4050569

RF EXPOSURE REPORT FCC ID: 2AIXN-BS220HA Date of issue: Sept. 20, 2018 Report Number: MTi180920E105 Sample Description: TWS Bluetooth Headset Model(s): BS220HA, BS209HA, BS221HA, BS222HA Applicant: GUANGZHOU U&I TECHNOLOGY COMPANY LIMITED Address: 4th Floor, 15th Building, Vtrek Innovation Industrial Park, No. 644 Shibei Road, Panyu District, Guangzhou, China Date of Test: July 23, 2018 to Sept. 20, 2018

- Page 2 of 4 - Report No.: MTi180920E105 TEST RESULT CERTIFICATION Applicant’s name: GUANGZHOU U&I TECHNOLOGY COMPANY LIMITED 4th Floor, 15th Building, Vtrek Innovation Industrial Park, No. 644 Address: Shibei Road, Panyu District, Guangzhou, China Manufacture's name: GUANGZHOU U&I TECHNOLOGY COMPANY LIMITED 4th Floor, 15th Building, Vtrek Innovation Industrial Park, No. 644 Address: Shibei Road, Panyu District, Guangzhou, China Product name: TWS Bluetooth Headset Model and/or type reference: BS220HA Serial Model: BS209HA, BS221HA, BS222HA RF Exposure Procedures: KDB 447498 D01 v06 This device described above has been tested by Shenzhen Microtest Co., Ltd and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. Tested by: Leo Su Sept. 20, 2018 Reviewed by: Blue Zheng Sept. 20, 2018 Approved by: Smith Chen Sept. 20, 2018

- Page 3 of 4 - Report No.: MTi180920E105 1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions. a) For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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  The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion. b) For 100 MHz to 6 GHz and test separation distances > 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following (also illustrated in Appendix B): 1) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 mm)·(f(MHz)/150)]} mW, for 100 MHz to 1500 MHz 2) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 mm)·10]} mW, for > 1500 MHz and ≤ 6 GHz c) For frequencies below 100 MHz, the following may be considered for SAR test exclusion (also illustrated in Appendix C): 1) For test separation distances > 50 mm and < 200 mm, the power threshold at the corresponding test separation distance at 100 MHz in step b) is multiplied by [1 + log(100/f(MHz))] 2) For test separation distances ≤ 50 mm, the power threshold determined by the equation in c) 1) for 50 mm and 100 MHz is multiplied by ½ 3) SAR measurement procedures are not established below 100 MHz.

- Page 4 of 4 - Report No.: MTi180920E105 When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any SAR test results below 100 MHz to be acceptable. 2. SAR Test Exclucsion Thresholds We use 5mm as separation distance to calculated. Bluetooth DSS: Transmit Measured Tune-up Max tune-up Result Frequency Power power (GHz) Mode (dBm) (dBm) power(dBm) calculation 1g SAR 2.402 -2.745 -3±1 -2 0.1956 3 2.441 GFSK -2.878 -3±1 -2 0.1972 3 2.48 -3.089 -3±1 -2 0.1987 3 2.402 -1.234 -1±1 0 0.3100 3 2.441 π/4-DQPSK -0.942 -1±1 0 0.3125 3 2.48 -1.187 -1±1 0 0.3150 3 2.402 -1.187 -1±1 0 0.3100 3 2.441 8DPSK -0.912 -1±1 0 0.3125 3 2.48 -1.190 -1±1 0 0.3150 3 Conclusion: For the max result : 0.3150≤ 3.0 for 1g SAR, No SAR is required. ----END OF REPORT----


Document Created: 2018-10-25 14:08:38
Document Modified: 2018-10-25 14:08:38
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