2AXQK-T09TWS Bluetooth headset

FCC Caution. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

AB1532 DC3.7V Wo r k i n g power Micropho nes Speaker Antenna Frequenc y:2402- 2480MHz Control key （ MFB,） DC5V Charging power Crystal: 24MHZ FCC ID: 2AXQK-T09

QF094234 Page 1 of 1 Revision 0 Authority to Act as Agent Date: 2020-12-29 TUV Rheinland Group 762 Park Avenue Youngsville, NC 27596 To Whom It May Concern: I appoint TUV Rheinland (Shenzhen) Co., Ltd. to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canada’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with shenzhenshishuangsikejiyouxiangongsi / changchunzhonglu33hao101gongmingshequ,shenzhenshiguangmingou(qu)gongmingjiedao, Shenzhen,China For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Expiration Date: 12 months By : Jun zhang (Signature) (Print Name) Title : Manager Telephone : 0755-8961642 On behalf of : Sshenzhenshishuangsikejiyouxiangongsi (Company Name) shenzhenshishuangsikejiyouxiangongsi

shenzhenshishuangsikejiyouxiangongsi Confidentiality Letter Date: 2020-12-29 Subject: Confidentiality Request forFCC ID: 2AXQK-T09 Pursuant toFCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subjectFCC/ICapplication be held confidential. Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagrams Short Term External Photos Short Term Permanent Internal Photos Short Term Permanent Operation Description/Theory of Operation Short Term Permanent Part List/Tune-Up Procedure Short Term Permanent Schematics Short Term Test Setup Photos Short Term Permanent User’s Manual shenzhenshishuangsikejiyouxiangongsi has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04- 1705. Sincerely, By: Jun zhang /Manager (Signature/Title) (Print name)

Page 1 of 5 Report No.: STS2011178 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: T09 Photo 1 Photo 2 Page 2 of 5 Report No.: STS2011178 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2011178 Photo 5 Photo 6 Page 4 of 5 Report No.: STS2011178 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2011178 Photo 9

Label Size:10*30mm The label is printed on the shell Model Name: T09 FCC ID: 2AXQK-T09

Page 1 of4 Report No.: STS2011178 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: T09 Photo 1 Photo 2 BT Antenna BT Antenna Page 2 of4 Report No.: STS2011178 Photo 3 Photo 4 Page 3 of4 Report No.: STS2011178 Photo 5 Photo 6 Page 4 of4 Report No.: STS2011178 Photo 7

Operation Theory and Signal Trend Description ： BluetoothHeadsetworksin2.4GHzfrequencyband (2.402GHz-2.480GHz). Maximum coverage is 10 meters. AB1532 is a Bluetooth 5.0 mode certified single chip solution,which supports HD Audio.AB1532 provides premium audio performance,crystal-clear voice,and advanced music quality in most Bluetooth andio headset applications.A new generation of echo cancellation and nois reduction schemes improve the audio quality of the voice calls on headset products. A Tensilica HiFi EP processor is embedded for I/O peripheral control,protocol stack,and DSP processing functions of AB1532.MMI and voice prompt contents can be customized to the enbedded Flash memory.An internal Audio codec supports high quality audio signals for premium audio applications.A specific touch sensor controller is equipped with power on/off control capability.A sensor DMA is also utilized by AB1532 for the purpose of low power sensor control. AB1532 supports “AiroThru” which conducts selected anbient sounds and mixes them with the music so that the audience can stay aware in their environment. AB1532 DC3.7V Wo r k i n g power Micropho nes Speaker Antenna Frequenc y:2402- 2480MHz Control key （ MFB,） DC5V Charging power Crystal: 24MHZ FCC ID: 2AXQK-T09 Bluetooth Frequency:2402 – 2480 MHz Modulation: GFSK(1Mbps), pi/4-DQPSK(2Mbps),8DPSK(3Mbps) Bluetooth Version5.0 Bluetooth Configuration:BR+EDR Antenna Type:Ceramic Antenna gain:4.9dBi Hardware version number :V1 Software version number :V0

FCC ID : 2AXQK-T09 RF EXPOSURE EVALUATION METHOD SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 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 is applied to determine SAR test exclusion. FCC ID : 2AXQK-T09 Maximum measured transmitter power. BT5.0+EDR The Worst Case Mode 2402-2480MHz Detector PEAK GFSK 6±1dBm π/4-DQPSK 7±1dBm 8-DPSK 7±1dBm Remark: The worst case gain of the antenna is 4.9dBi. 4.9dBi logarithmic terms convert to numeric result is nearly 3.09 GFSK2.4026.257 5.011872341.5535 3 π/4-DQPSK2.4027.368 6.309573441.9558 3 8-DPSK2.4027.638 6.309573441.9558 3 Mode Limit Maximum Peak Conducted Output Power (dBm) frequency (GHz) Tune up Power(dBm) Tune up Power (mW) Result Threshold at which no SAR required is 1.9558≤ 3.0 for 1-g SAR, Separation distance is 5mm.

ABCD DCBA MIC_RP F1 MIC_LN F2 GND F4 GND F5 GND F6 GND F7 GPIO27 F9 GPIO26 F10 GND G1 GPIO1 G2 GND G5 GND G6 LDO_LV G9 GPIO24 G10 LNA_P H1 GND H2 GPIO21 H9 GPIO22 H10 VCCRF J1 GPIO0 J2 UART_RX J3 GPIO28 J4 VCCDIG J5 VCCUSB J6 GPIO23 J7 GPIO25 J8 GPIO19 J9 GPIO20 J10 VCCVCO K1 VCCPLL K2 UART_TX K3 GPIO29 K4 GPIO17 K5 VCCIO K6 USB_DM K7 USB_DP K8 USB_RREF K9 GPIO18 K10 SPK_LP A1 SPK_LN A2 SPK_RN A3 SPK_RP A4 GPIO3 A5 RSTN A6 HV_MIC A7 VCHG A8 VBAT A9 LX_LV A10 XTAL16M_OUT B1 VCCSPK B2 MIC_BIAS2 B3 GPIO2 B4 OD_GPIO1 B5 OD_GPIO0 B6 LED1 B7 LED0 B8 VIN B9 LX_MV B10 XTAL16M_IN C1 VCCXO C2 REGEN C9 SENSE_BUCKMV C10 MIC_BIAS D1 AU_REF D2 GND D5 GND D6 SD_VCC D9 LDO_LV2 D10 MIC_RN E1 MIC_LP E2 GND E4 GND E5 GND E6 GND E7 VREGOUT_HV E9 SENSE_BUCKLV E10 U1 AB1532 UART_RXMIC_LN C10.5PF C20.8PF C30.5PF C281UF L22.7NH L31NH R1 1NH C4NC PIO1 C51UF C61uF C7100NF C8100NF C94U7F C104U7F C11 1UF C12 4U7F C13 4U7F C141UF C15100NF C161UF C17 1UF C181UF BUCK_LV LDO_LV2 URAT_TX BUCK_MV C1933PF C2033PF VCHGVBAT C214U7F L4 10UH BUCK_LV LED0LED1 BUCK_MVXTAL_OUT 1 2 3 4 X124MHz XTAL_OUTXTAL_IN VIN L7 10UH L5120NHL6120NH S132O BUCK_MV XTAL_IN MIC_LP C271UF C221UFC231UF C24100NF C2533PF D1BLUED2RED VDD 4 OUT 1 GND 3 GND 2 MIC1MIC2718 MIC_LPMIC_LNMIC_BIAS MIC_BIAS BUCK_MV REGEN BUCK_LV VIN LED0LED1 R2NC RST_N K1SW-PB VIN REGEN 12 J1BAT 12 J2VUSB VBAT R42R2 VCHG E1ANTENNA R7 NC R82K2 OD_GPIO 1 T1CON1 1 T2CON1 1 T3CON1 1 T4CON1 1 T5CON1 1 T6CON1 1 T7CON1 1 T8CON1 VBAT URAT_TX UART_RX OD_GPIO RST_N REGEN PIO1 LDO_LV2 LDO_LV2 LDO_LV2 GPIO28 GPIO29 R9100KR10100K T GPIO28GPIO29 FCC ID: 2AXQK-T09

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, All Test Data Presented in this report is only applicable to presented Test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No.: STS2011178W02 Issued for shenzhenshishuangsikejiyouxiangongsi changchunzhonglu33hao101gongmingshequ,shenzhenshig uangmingou(qu)gongmingjiedao, Shenzhen,China Product Name: TWS Bluetooth headset Brand Name: N/A Model Name: T09 Series Model: N/A FCC ID: 2AXQK-T09 Test Standard: FCC Part 15.247 S T L A B S Page 2 of 76 Report No.: STS2011178W02 TEST RESULT CERTIFICATION Applicant’s Name ................... : shenzhenshishuangsikejiyouxiangongsi Address .................................. : changchunzhonglu33hao101gongmingshequ,shenzhenshiguang mingou(qu)gongmingjiedao, Shenzhen,China Manufacturer's Name ............. : Shenzhen iFree Electronic Technology Co., Ltd Address .................................. : 7F A9 Building Tian Rui industrial park No.35 Fu Yuan 1st Road, FuYong Road Bao'an District Product Description Product Name ........................ : TWS Bluetooth headset Brand Name ......................... : N/A Model Name ........................... : T09 Series Model .......................... : N/A Test Standards ....................... : FCC Part15.247 Test Procedure ....................... : ANSI C63.10-2013 This device described above has been tested by STS, 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. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ............................... : Date of receipt of test item ......... : 24 Sept. 2020 Date (s) of performance of tests : 24 Nov. 2020 ~ 10 Dec. 2020 Date of Issue ............................. : 10 Dec. 2020 Test Result ................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 76 Report No.: STS2011178W02 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 13 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 14 2.7 EQUIPMENTS LIST 15 3. EMC EMISSION TEST 17 3.1 CONDUCTED EMISSION MEASUREMENT 17 3.2 RADIATED EMISSION MEASUREMENT 21 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 33 4.1 LIMIT 33 4.2 TEST PROCEDURE 33 4.3 TEST SETUP 34 4.4 EUT OPERATION CONDITIONS 34 4.5 TEST RESULTS 35 5. NUMBER OF HOPPING CHANNEL 50 5.1 LIMIT 50 5.2 TEST PROCEDURE 50 5.3 TEST SETUP 50 5.4 EUT OPERATION CONDITIONS 50 5.5 TEST RESULTS 51 6. AVERAGE TIME OF OCCUPANCY 52 6.1 LIMIT 52 6.2 TEST PROCEDURE 52 6.3 TEST SETUP 52 6.4 EUT OPERATION CONDITIONS 52 6.5 TEST RESULTS 53 7. HOPPING CHANNEL SEPARATION MEASUREMEN 59 Page 4 of 76 Report No.: STS2011178W02 Table of Contents Page 7.1 LIMIT 59 7.2 TEST PROCEDURE 59 7.3 TEST SETUP 59 7.4 EUT OPERATION CONDITIONS 59 7.5 TEST RESULTS 60 8. BANDWIDTH TEST 66 8.1 LIMIT 66 8.2 TEST PROCEDURE 66 8.3 TEST SETUP 66 8.4 EUT OPERATION CONDITIONS 66 8.5 TEST RESULTS 67 9. OUTPUT POWER TEST 73 9.1 LIMIT 73 9.2 TEST PROCEDURE 73 9.3 TEST SETUP 73 9.4 EUT OPERATION CONDITIONS 73 9.5 TEST RESULTS 74 10. ANTENNA REQUIREMENT 75 10.1 STANDARD REQUIREMENT 75 10.2 EUT ANTENNA 75 Page 5 of 76 Report No.: STS2011178W02 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 10 Dec. 2020 STS2011178W02 ALL Initial Issue Page 6 of 76 Report No.: STS2011178W02 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Page 7 of 76 Report No.: STS2011178W02 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 30-1GHz ±5.6dB 4 All emissions, radiated 1G-6GHz ±5.5dB 5 All emissions, radiated>6G ±5.8dB 6 Conducted Emission (9KHz-150KHz) ±3.37dB 7 Conducted Emission (150KHz-30MHz) ±3.83dB Page 8 of 76 Report No.: STS2011178W02 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name TWS Bluetooth headset Trade …

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Page 39 of 76 Report No.: STS2011178W02 For Hopping Band edge GFSK Page 40 of 76 Report No.: STS2011178W02 Temperature: 25°C Relative Humidity: 50% Test Mode: π/4-DQPSK(2Mbps)– 00/39/78 CH Test Voltage: DC 3.7V 00 CH 39 CH Page 41 of 76 Report No.: STS2011178W02 78 CH Page 42 of 76 Report No.: STS2011178W02 For Band edge(it's also the reference level for conducted spurious emission) 00 CH 39 CH Page 43 of 76 Report No.: STS2011178W02 78 CH Page 44 of 76 Report No.: STS2011178W02 For Hopping Band edge π/4-DQPSK Page 45 of 76 Report No.: STS2011178W02 Temperature: 25°C Relative Humidity: 50% Test Mode: 8DPSK(3Mbps) -00/39/78 CH Test Voltage: DC 3.7V 00 CH 39 CH Page 46 of 76 Report No.: STS2011178W02 78 CH Page 47 of 76 Report No.: STS2011178W02 For Band edge(it's also the reference level for conducted spurious emission) 00 CH 39 CH Page 48 of 76 Report No.: STS2011178W02 78 CH Page 49 of 76 Report No.: STS2011178W02 For Hopping Band edge 8DPSK Page 50 of 76 Report No.: STS2011178W02 5. NUMBER OF HOPPING CHANNEL 5.1 LIMIT FCC Part 15.247,Subpart C Section Test Item Limit FrequencyRange (MHz) Result 15.247 (a)(1)(iii) Number of Hopping Channel ≥15 2400-2483.5 PASS Spectrum Parameters Setting Attenuation Auto Span Frequency > Operating FrequencyRange RB 300KHz VB 300KHz Detector Peak Trace Max Hold Sweep Time Auto 5.2 TEST PROCEDURE a. The EUT was directly connected to the spectrum analyzer and antenna output port as show in the block diagram below. b. Spectrum Setting: RBW= 300KHz, VBW=300KHz, Sweep time = Auto. 5.3 TEST SETUP 5.4 EUT OPERATION CONDITIONS Please refer to section 3.1.4 of this report. Page 51 of 76 Report No.: STS2011178W02 5.5 TEST RESULTS Temperature: 25°C Relative Humidity: 60% Test Mode: Hopping Mode -GFSK Mode Test Voltage: DC 3.7V Number of Hopping Channel 79 Hopping channel Page 52 of 76 Report No.: STS2011178W02 6. AVERAGE TIME OF OCCUPANCY 6.1 LIMIT FCC Part 15.247,Subpart C Section Test Item Limit FrequencyRange (MHz) Result 15.247 (a)(1)(iii) Average Time of Occupancy 0.4sec 2400-2483.5 PASS 6.2 TEST PROCEDURE a. The transmitter output (antenna port) was connected to the spectrum analyzer. b. Set RBW =1MHz/VBW =3MHz. c. Use a video trigger with the trigger level set to enable triggering only on full pulses. d. Sweep Time is more than once pulse time. e. Set the center frequency on any frequency would be measure and set the frequency span to zero span. f. Measure the maximum time duration of one single pulse. g. Set the EUT for DH5, DH3 and DH1 packet transmitting. h. Measure the maximum time duration of one single pulse. i. DH5 Packet permit maximum 1600/ 79 / 6 = 3.37 hops per second in each channel (5 time slots RX, 1 time slot TX). So the number of pulses in the observation period of 31.6 seconds is 3.37 x 31.6 = 106.6. j. DH3 Packet permit maximum 1600 / 79 / 4 = 5.06 hops per second in each channel (3 time slots RX, 1 time slot TX). So the number of pulses in the observation period of 31.6 seconds is 5.06 x 31.6 = 160. k. DH1 Packet permit maximum 1600 / 79 / 2 = 10.12 hops per second in each channel (1 time slot RX, 1 time slot TX). So the number of pulses in the observation period of 31.6 seconds is 10.12 x 31.6 = 320. 6.3 TEST SETUP 6.4 EUT OPERATION CONDITIONS Please refer to section 3.1.4 of this report. Page 53 of 76 Report No.: STS2011178W02 6.5 TEST RESULTS Temperature: 25°C Relative Humidity: 50% Test Mode: GFSK(1Mbps)-DH1/DH3/DH5 Test Voltage: DC 3.7V Data Packet Channel pulse time(ms) Dwell Time(s) Limits(s) DH1 middle 0.402 0.129 0.4 DH3 middle 1.663 0.266 0.4 DH5 middle 2.908 0.310 0.4 Page 54 of 76 Report No.: STS2011178W02 CH39-DH1 CH39-DH3 CH39-DH5 Page 55 of 76 Report No.: STS2011178W02 Temperature: 25°C Relative Humidity: 50% Test Mode: π/4-DQPSK(2Mbps)– 2DH1/2DH3/2DH5 Test Voltage: DC 3.7V Data Packet Channel pulse time(ms) Dwell Time(s) Limits(s) 2DH1 middle 0.411 0.132 0.4 2DH3 middle 1.664 0.266 0.4 2DH5 middle 2.914 0.311 0.4 Page 56 of 76 Report No.: STS2011178W02 CH39-2DH1 CH39-2DH3 CH39-2DH5 Page 57 of 76 Report No.: STS2011178W02 Temperature: 25°C Relative Humidity: 50% Test Mode: 8DPSK(3Mbps)– 3DH1/3DH3/3DH5 Test Voltage: DC 3.7V Data Packet Channel pulse time(ms) Dwell Time(s) Limits(s) 3DH1 middle 0.412 0.132 0.4 3DH3 middle 1.665 0.266 0.4 3DH5 middle 2.916 0.311 0.4 Page 58 of 76 Report No.: STS2011178W02 CH39-3DH1 CH39-3DH3 CH39-3DH5 Page 59 of 76 Report No.: STS2011178W02 7. HOPPING CHANNEL SEPARATION MEASUREMEN 7.1 LIMIT Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. Spectrum Parameter Setting Attenuation Auto Span Frequency > 20 dB Bandwidth or Channel Separation RB 30 kHz (20dB Bandwidth) / 30 kHz (Channel Separation) VB 100 kHz (20dB Bandwidth) / 100 kHz (Channel Separation) Detector Peak Trace Max Hold Sweep Time Auto 7.2 TEST PROCEDURE a. The transmitter output (antenna port) was connected to the spectrum analyser in peak hold mode. b. The resolution bandwidth of 30 kHz and the video bandwidth of 100 kHz were utilised for 20 dB bandwidth measurement. c. The resolution bandwidth of 30 kHz and the video bandwidth of 100 kHz were utilised for channel separation measurement. 7.3 TEST SETUP 7.4 EUT OPERATION CONDITIONS The EUT was programmed to be in continuously transmitting mode. Page 60 of 76 Report No.: STS2011178W02 7.5 TEST RESULTS Temperature: 25°C Relative Humidity: 50% Test Mode: CH00 / CH39 / CH78 (GFSK(1Mbps) Mode) Test Voltage: DC 3.7V Frequency Mark1 Frequency （MHz） Mark2 Frequency （MHz） Ch. Separation (MHz) Limit (MHz) Result 2402 MHz 2402.002 2403.001 0.999 0.827 Complies 2441 MHz…

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Page 1 of 2 FCC ID: 2AXQK-T09 DSS Setup photo Model name: T09 DSS conduction DSS radiation L Page 2 of 2 FCC ID: 2AXQK-T09 DSS radiation H