2AUFRRT907Wireless Audio Adapter

FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. FCC Radiation Exposure Statement:FCC Radiation Exposure Statement: FCC ID: 2AUFRRT907

Report No.: W EXHIBI EUT View 1 EUT View 2 WTX19X060 T 2 - EUT 1 2 42970W T EXTER RNAL PH HOTOGR APHS M FCC Model: RT907 C Part 15.247 Report No.: W EUT View 3 EUT View 4 WTX19X060 3 4 42970W M FCC Model: RT907 C Part 15.247 Report No.: W EUT View 5 EUT View 6 WTX19X060 5 6 42970W M FCC Model: RT907 C Part 15.247 Report No.: W EUT View 7 WTX19X060 7 42970W M FCC Model: RT907 C Part 15.247

Report No.: W EXHIBI Proposed Specificatio n silk-screened Proposed WTX19X060 T 1 - PRO FCC ID La ns: Text is b d onto the EU Label Loca 42970W ODUCT L abel Forma black in colo UT or shall be ation on EU LABELIN at FCC ID r and justifie e affixed at a UT FCC NG D: 2AUFRR ed. Labels ar conspicuous ID Label Lo RT907 re printed in location on t cation indelible ink the EUT. M FCC k on perman Model: RT907 C Part 15.247 nent adhesivee

Report No.: W EXHIBI EUT Housi n EUT Housi n WTX19X060 T 3 - EUT ng and Boar ng and Boar 42970W T INTER rd View 1 rd View 2 NAL PHO OTOGRA APHS M FCC Model: RT907 C Part 15.247 Report No.: W Solder Boar Solder Boar WTX19X060 rd-Compone rd-Compone 42970W ent View 1 ent View 2 M FCC Model: RT907 C Part 15.247 Report No.: W Solder Boar Antenna Vi WTX19X060 rd-Compone iew BT Anten 42970W ent View 3 nna M FCC Model: RT907 C Part 15.247

1. MAXIMUM PERMISSIBLE EXPOSURE (MPE) Client Information Applicant: ShenZhen 1Mii Technologies Limited Address of applicant: Room 201,Black A,NO.1.Qianwan Road 1,Qianhaiwan Port Cooperative District, Shenzhen, China Manufacturer: ShenZhen 1Mii Technologies Limited Address of manufacturer: Room 201,Black A,NO.1.Qianwan Road 1,Qianhaiwan Port Cooperative District, Shenzhen, China General Description of EUT Product Name: Wireless Audio Adapter Brand Name: 1Mii Model No.: RT907 Adding Model(s): B06pro, B0306, B06+, ZW-B06pro FCC ID: 2AUFRRT907 Rated Voltage: DC5V Battery Capacity: / Power Adapter: MODEL: A18A-050100U-US2 INPUT: AC100-240V~50/60Hz, MAX, 0.2A OUTPUT: DC5V, 1A Note: The test data is gathered from a production sample, provided by the manufacturer. Technical Characteristics of EUT Bluetooth Version: V5.0 (BR/EDR mode) Frequency Range: 2402-2480MHz RF Output Power: 5.635dBm (Conducted) Data Rate: 1Mbps, 2Mbps, 3Mbps Modulation: GFSK, Pi/4 DQPSK, 8DPSK Quantity of Channels: 79 Channel Separation: 1MHz Type of Antenna: External Antenna Antenna Gain: 2.0dBi 1.2 Standard Applicable According to §1.1307(b)(1) and KDB 447498 D01 General RF Exposure Guidance v06, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. (a) Limits for Occupational / Controlled Exposure Frequency range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times | E | 2 , | H | 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 / / F/300 6 1500-100000 / / 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times | E | 2 , | H | 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 / / F/1500 30 1500-100000 / / 1 30 Note: f = frequency in MHz: * = Plane-wave equivalents power density 1.3 MPE Calculation Method S = (30*P*G) / (377*R 2 ) S = power density (in appropriate units, e.g., mw/cm 2 ) P = power input to the antenna (in appropriate units, e.g., mw) G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor is normally numeric gain. R = distance to the center of radiation of the antenna (in appropriate units, e.g., cm) 1.4 MPE Calculation Result Maximum Tune-Up output power: 6 (dBm) Maximum peak output power at antenna input terminal: 3.98(mW) Prediction distance: >20(cm) Prediction frequency: 2480 (MHz) Antenna gain: 2(dBi) Directional gain (numeric gain): 1.58 The worst case is power density at prediction frequency at 20cm: 0.0013(mw/cm 2 ) MPE limit for general population exposure at prediction frequency: 1 (mw/cm 2 ) Result: Pass

Model: RT907 Report No.: WTX19X06042970W Page 1 of 55 FCC Part 15.247 FCC Part 15C Measurement and Test Report For ShenZhen 1Mii Technologies Limited Room 201,Black A,NO.1.Qianwan Road 1,Qianhaiwan Port Cooperative District, Shenzhen, China FCC ID: 2AUFRRT907 FCC Rule(s): FCC Part 15.247 Product Description: Wireless Audio Adapter Tested Model: RT907 Report No.: WTX19X06042970W Sample Receipt Date: 2019-06-27 Tested Date: 2019-06-27 to 2019-12-10 Issued Date: 2019-12-10 Tested By: Jack Huang / Engineer Reviewed By: Silin Chen / EMC Manager Approved & Authorized By: Jandy So / PSQ Manager Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Waltek Testing Group (Shenzhen) Co., Ltd. Model: RT907 Report No.: WTX19X06042970W Page 2 of 55 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................... 5 1.3 TEST METHODOLOGY ............................................................................................................................................. 5 1.4 TEST FACILITY ....................................................................................................................................................... 5 1.5 EUT SETUP AND TEST MODE ................................................................................................................................. 6 1.6 MEASUREMENT UNCERTAINTY .............................................................................................................................. 7 1.7 TEST EQUIPMENT LIST AND DETAILS ..................................................................................................................... 8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. RF EXPOSURE ....................................................................................................................................................... 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 TEST RESULT........................................................................................................................................................ 11 4. ANTENNA REQUIREMENT ................................................................................................................................ 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 EVALUATION INFORMATION ................................................................................................................................ 12 5. FREQUENCY HOPPING SYSTEM REQUIREMENTS ................................................................................... 13 5.1 STANDARD APPLICABLE ....................................................................................................................................... 13 5.2 FREQUENCY HOPPING SYSTEM............................................................................................................................. 13 5.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .................................................................................... 14 6. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ................................................... 15 6.1 STANDARD APPLICABLE ....................................................................................................................................... 15 6.2 TEST PROCEDURE ................................................................................................................................................. 15 6.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 15 7. DWELL TIME OF HOPPING CHANNEL .......................................................................................................... 19 7.1 STANDARD APPLICABLE ....................................................................................................................................... 19 7.2 TEST PROCEDURE ................................................................................................................................................. 19 7.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 20 8. 20DB BANDWIDTH ............................................................................................................................................... 27 8.1 STANDARD APPLICABLE ....................................................................................................................................... 27 8.2 TEST PROCEDURE ................................................................................................................................................. 27 8.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 28 9. RF OUTPUT POWE…

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