2A6V3-XLBTRSBluetooth adaptor

Radiation Exposure Statement The device has been evaluated to meet general RF exposure requ irement in portable exposure condition without restriction.

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This reportshall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7

Label Location: FCC ID: 2A6V3-XLBTRS

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 Fig.3 Fig.4 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Fig.5 Fig.6

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results Test Mode Channel Frequency (MHz) Measured Peak Output Power (dBm) GFSK(1Mbps) 00 2402 -4.45 19 2440 -3.19 39 2480 -2.15 Manufacturing tolerance GFSK (1Mbps Peak) Channel Channel 0 Channel 19 Channel 39 Target (dBm) -4.5 -3.5 -2.5 Tolerance ±(dB) 1.0 1.0 1.0 Results Test Mode Channel Frequency (MHz) Max. Tune Up Power (dBm, Peak) Max. Eirp including Tune Up (dBm, Peak) Max. Eirp including Tune Up (mW, Peak) Exemption Limit (mW) GFSK(1Mbps) 2402 -3.5 -3.5 0.45 10 2440 -2.5 -2.5 0.56 10 2480 -1.5 -1.5 0.71 10 The antenna gain of the EUT for BT is 0dBi(Max). the Maximum Eirp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 1 of 21 RF Test Data for BT(BLE) (Conducted Measurement) Product Name: Bluetooth adaptor Trade Mark: POWERBASS Test Model: XL-BTRS FCC ID: 2A6V3-XLBTRS Environmental Conditions Temperature: 25.5C Relative Humidity: 55% ATM Pressure: 100.0 kPa Test Engineer: Anna Hu Supervised by: Hugo Chen NOTE N/A Appendix A: DTS Bandwidth Test Result TestMode Antenna Channel DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.652 2401.668 2402.320 0.5 PASS 2440 0.664 2439.668 2440.332 0.5 PASS 2480 0.636 2479.680 2480.316 0.5 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 2 of 21 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 3 of 21 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Channel OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0322 2401.489 2402.521 --- --- 2440 1.0319 2439.494 2440.526 --- --- 2480 1.0338 2479.493 2480.527 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 4 of 21 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 5 of 21 Appendix C: Maximum conducted output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 -4.45 ≤30 PASS 2440 -3.19 ≤30 PASS 2480 -2.15 ≤30 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 6 of 21 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 7 of 21 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 8 of 21 Appendix D: Maximum power spectral density Test Result TestMode Antenna Channel Result[dBm/3-100kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -20.1 ≤8.00 PASS 2440 -18.7 ≤8.00 PASS 2480 -17.69 ≤8.00 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 9 of 21 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 10 of 21 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 11 of 21 Appendix E: Band edge measurements Test Result TestMode Antenna ChName Channel RefLevel[dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 Low 2402 -5.02 -50.62 ≤-25.02 PASS High 2480 -2.64 -48.89 ≤-22.64 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 12 of 21 Test Graphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 13 of 21 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Channel FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 Reference -5.02 -5.02 --- PASS 30~1000 -5.02 -61.69 ≤-25.02 PASS 1000~26500 -5.02 -51.67 ≤-25.02 PASS 2440 Reference -3.67 -3.67 --- PASS 30~1000 -3.67 -61.26 ≤-23.67 PASS 1000~26500 -3.67 -51.39 ≤-23.67 PASS 2480 Reference -2.99 -2.99 --- PASS 30~1000 -2.99 -61.96 ≤-22.99 PASS 1000~26500 -2.99 -51.72 ≤-22.99 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 14 of 21 Test Graphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 15 of 21 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 16 of 21 BLE_1M_Ant1_2480_30~1000 BLE_1M_Ant1_2480_1000~26500 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 17 of 21 Appendix G: Duty Cycle Test Result TestMode Antenna Channel Transmission Duration [ms] Transmission Period [ms] Duty Cycle [%] 1/T[kHz] BLE_1M Ant1 2402 0.40 0.63 63.49 2.50 2440 0.39 0.62 62.90 2.56 2480 0.40 0.63 63.49 2.50 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 18 of 21 Test Graphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 19 of 21 Appendix H: Emissions in Restricted Bands Test Result TestMode Antenna ChName Channel Detector Freq. [MHz] Result [dBm] Limit [dBm] Verdict BLE_1M Ant1 Low 2402 AV 2310.000 -49.14 ≤-41.20 PASS AV 2388.830 -47.99 ≤-41.20 PASS AV 2390.000 -48.89 ≤-41.20 PASS Peak 2310.000 -41.51 ≤-21.20 PASS Peak 2358.905 -39.19 ≤-21.20 PASS Peak 2390.000 -42.65 ≤-21.20 PASS High 2480 AV 2483.500 -48.12 ≤-41.20 PASS AV 2497.760 -47.34 ≤-41.20 PASS AV 2500.000 -47.96 ≤-41.20 PASS Peak 2483.500 -40.81 ≤-21.20 PASS Peak 2499.440 -38.57 ≤-21.20 PASS Peak 2500.000 -41.49 ≤-21.20 PASS Note： 1. The Antenna Gain is compensated in the graph with 2dBi and Antenna Gain which is Higher. 2. The limit in dBm for average detector is conversion from 54dBuV/m, according to 15.209(a). The limit in dBm for peak detector is 20dB above the limit of average detector in dBm. Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 20 of 21 Test Graphs BLE_1M_Ant1_Low_2402_AV BLE_1M_Ant1_Low_2402_Peak BLE_1M_Ant1_High_2480_AV Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS Report No.: TZ220503293-E Page 21 of 21 BLE_1M_Ant1_High_2480_Peak

Report No.: TZ220503293-E Page 1 of 32 FCC TEST REPORT Test report On Behalf of PowerBass USA., Inc. For Bluetooth adaptor Model No.: XL-BTRS FCC ID: 2A6V3-XLBTRS Prepared for : PowerBass USA., Inc. 2133 South Green Privado, Ontario California, USA , 91761 Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2022/6/4~2022/6/10 Date of Report: 2022/6/11 Report Number: TZ220503293-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ220503293-E Page 2 of 32 TEST RESULT CERTIFICATION Applicant’s name ................. : PowerBass USA., Inc. Address .................................. : 2133 South Green Privado, Ontario California, USA , 91761 Manufacture's Name ............ : Ningbo AVS Industrial Co.,Ltd. Address .................................. : 7th Building, No.59 Chuang Fu Road, Xiao Gang Industrial Zone, Ningbo 315800, China Product description Trade Mark: POWERBASS Product name ........................... : Bluetooth adaptor Model and/or type reference : XL-BTRS Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ........................................... : Date (s) of performance of tests ............. : 2022/6/4~ 2022/6/10 Date of Issue .......................................... : 2022/6/11 Test Result .............................................. : Pass Testing Engineer : (Anna Hu) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ220503293-E Page 3 of 32 Revision History Revision Issue Date Revisions Revised By 000 2022/6/11 Initial Issue Andy Zhang Report No.: TZ220503293-E Page 4 of 32 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 5 1.1. DESCRIPTION OF DEVICE (EUT) ........................................................................................................................ 5 1.2. HOST SYSTEM CONFIGURATION LIST AND DETAILS .......................................................................................... 5 1.3 EUT CONFIGURATION .......................................................................................................................................... 6 1.4. EXTERNAL I/O CABLE ......................................................................................................................................... 6 1.5. DESCRIPTION OF TEST FACILITY ........................................................................................................................ 6 1.6. STATEMENT OF THE MEASUREMENT UNCERTAINTY .......................................................................................... 7 1.7. MEASUREMENT UNCERTAINTY ........................................................................................................................... 7 1.8. DESCRIPTION OF TEST MODES .......................................................................................................................... 7 1.9. FREQUENCY OF CHANNELS ................................................................................................................................ 7 2. TEST METHODOLOGY ......................................................................................................................................... 8 2.1. EUT CONFIGURATION......................................................................................................................................... 8 2.2. EUT EXERCISE ................................................................................................................................................... 8 2.3. GENERAL TEST PROCEDURES ........................................................................................................................... 8 3. SYSTEM TEST CONFIGURATION ...................................................................................................................... 9 3.1. JUSTIFICATION..................................................................................................................................................... 9 3.2. EUT EXERCISE SOFTWARE ................................................................................................................................ 9 3.3. SPECIAL ACCESSORIES ...................................................................................................................................... 9 3.4. BLOCK DIAGRAM/SCHEMATICS........................................................................................................................... 9 3.5. EQUIPMENT MODIFICATIONS .............................................................................................................................. 9 3.6. TEST SETUP ........................................................................................................................................................ 9 4. SUMMARY OF TEST RESULTS ........................................................................................................................ 10 5. TEST RESULT ....................................................................................................................................................... 11 5.1. ON TIME AND DUTY CYCLE .…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2A6V3-XLBTRS TEST SETUP PHOTOS OF THE EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz