2ARKF-BT-31S-CPROTABL SPEAKERPHONE

I Howtoo阳 2. Appl lcatlon of Blu•tooth wl .. l••• co四”•ctlon（。”ly appl lcabl• to Bluetooth versl。n): 2.1 After the Bluetooth wireless connection of the host ia aucceaaful, the instant messaging or Internet phone applicali。nsoftware（剧。has QQ, Skype, etc.) in the computer can be used. The Internet ph。ne conference can be carried out ace。rdlngto tha。paratlon meth。d of the application software. 2.2 Whan the host la connected with Iha mobile phone through Bluatooth, In add阳ont。Iha normal calling, answering or ending of call with the m。bileph。ne, it can also sho叫press the ” Power ON /OFF" kay ortha host lo answer tha Incoming国ll o『long praaa tha "Power ON /OFF" key of the host t，。enda call. 2.3 Speaker volume adjustment: during a call, press the -Volume decrease ’ key of the host to gradually decrease the speaker v。lumeto themlnlmum(C。ntlnuousflashing green light means mute speaker); and press the Volume increase key to gradu副lyincrease the speaker volume t。the maximum. 2.4 Microphone pickup and mute: during a call, tha microphone ls In Iha pickup state by defau It. When p昭ssthe”Microphone mute “ key of the host, the status indic时orwill be red, indicating that the microphone is mute. Pre回thiskey again to turn o肝thered, indicating that the microphone pickup is restored. 2.5 When the status Indicator flashes In 。range,II will keep reminding you that the bulll-ln bsttery is low. Please plug it into the use p。wer port for cha咆ing. 2.6 Whan charging, Iha Indicator will be rad, and when the bullt-ln batte叩Isfully charged , the red wil I go out. 2. 7 Bluetooth con naction is p陪他厅adwhen both。f use wired connecti。n and Bluet。oth wlreless c。nnectlonare available. I Points伽atten 1. You四n ’ I connect multiple microphone speakers to the c。mputarintelligent device at the same II町，e,lncludlng the native device ， 。r else, e squeak may appaa『duringthe call. 2. II is requi『ed to connect the USB cable di『ectlyto the USB inte『face of the computer device. It may cause。peratlonproblems If It la c。nnectad through the USB hub. 3. Check whether the device driver is installed and connected successfully: check whether the default device dlaplays "native device m。del"In the。ptlonsof playback (output) and record Ing (In put）。fthe sound and audio device prope同leaof the computer c。ntrolpanel option, if not, re-select "Native devi饵model'andc。nfirm. 4. When u”’It can adjust the volume through the speaker。ptlon。n the computer If necessary. When using instant messaging or Internet ph。neapplicati。n so仕ware,please set the device oflhe model as the pre俑，redaudio device. 5.D。not re pal r the曲”四by y。urself ， 。『else,It may cause electrlc shock. Please contact y。urseller if there is any problem needing repair. (3) FCC Statement 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. 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: •R eorient 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.

Shenzhen Innotrik Technology Co., Ltd. Add: Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Date: 2021-3-6 FCC ID: 2ARKF-BT-31S-C Dear Sir/Madam, We, Shenzhen Innotrik Technology Co., Ltd. Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: PROTABL SPEAKERPHONE Model no.: BT-31S-C, I-31, BT-31, BT-31S, BT-31-C Sincerely, Name/Title： Jindi Liang/Office manager Company: Shenzhen Innotrik Technology Co., Ltd. Address: Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Phone: 86-755-27811125 Fax: 86-755-27811125 E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2021-3-6> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2ARKF-BT-31S-C BT-31S-C For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Jindi Liang/Office manager Company: Shenzhen Innotrik Technology Co., Ltd. Address: Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Phone: 86-755-27811125 Fax: 86-755-27811125 E-Mail: [email protected]

Shenzhen Innotrik Technology Co., Ltd. Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2021-3-6 To whom it may concern: We, Shenzhen Innotrik Technology Co., Ltd. the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2ARKF-BT-31S-C including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Jindi Liang/Office manager Company: Shenzhen Innotrik Technology Co., Ltd. Address: Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Phone: 86-755-27811125 Fax: 86-755-27811125 E-Mail: [email protected]

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 3 External Photos of the EUT Fig.1 Fig.2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 3 Fig.3 Fig.4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 3 Fig.5 Fig.6

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID:2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 1 Label and Location Size: L2.0cm*W2.0cm Material: Tagboard Glue: adhesive sticker Font color: White Label color: Black Label Location PROTABL SPEAKERPHONE Model No.: BT-31S-C FCC ID: 2ARKF-BT-31S-C

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 4 Internal Photos of the EUT Fig.1 Fig.2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 4 Fig.3 Fig.4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 4 Fig.5 Fig.6 BT Antenna SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 4 Fig.7 Fig.8

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C ________________________________________________________________________ ___ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 4 FCC RF Exposure Evaluation 1. Product Information FCC ID : 2ARKF-BT-31S-C Product name : PROTABL SPEAKERPHONE Test Model : BT-31S-C Additional Model No. : I-31, BT-31, BT-31S, BT-31-C Model Declaration : PCB board, structure and internal of these model(s) are the same, So no additional models were tested Power supply : Input: DC 5V, 500mA DC 3.7V by Rechargeable Li-ion Battery, 2000mAh Bluetooth : 2402MHz ~ 2480MHz Channel Number : 79 channels for Bluetooth V5.0(DSS) Channel Spacing : 1MHz for Bluetooth V5.0 (DSS) Modulation Type : GFSK, π/4-DQPSK, 8-DPSK for Bluetooth V5.0(DSS) Bluetooth Version : V5.0 Antenna Type : PCB Antenna Antenna Gain : 0.5dBi(Max.) Hardware Version : / Software Version : / Exposure category : General population/uncontrolled environment EUT Type : Production Unit Device Type : Portable Device SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C ________________________________________________________________________ ___ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 4 2. Evaluation method and Limit According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 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, listed below, is 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.22 The minimum test separation distance 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 (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the 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; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.“ [(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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 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 f) in section 4.1 is applied to determine SAR test exclusion. When one of the following test exclusion conditions is satisfied for all combinations of simultaneous transmission configurations, further equipment approval is not required to incorporate transmitter modules in host devices that operate in the mixed mobile and portable host platform exposure conditions. The grantee is responsible for documenting this according to Class I permissive change requirements. Antennas that qualify for standalone SAR test exclusion must apply the estimated standalone SAR to determine simultaneous transmission test exclusion. a) The [∑ of (the highest measured or estimated SAR for each standalone antenna configuration, adjusted for maximum tune-up tolerance) / 1.6 W/kg] + [∑ of MPE ratios] is ≤ 1.0. b)The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating in portable device exposure conditions are all ≤ 0.04, and the [∑ of MPE ratios] is ≤ 1.0. 3. Refer Evaluation Method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C ________________________________________________________________________ ___ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 4 4. Conducted Power Results <BT> Mode Channel Frequency (MHz) Peak Conducted Output Power (dBm) GFSK 0 2402 1.835 39 2441 0.058 78 2480 -1.884 π/4DQPSK 0 2402 4.110 39 2441 2.245 78 2480 0.323 8DPSK 0 2402 4.557 39 2441 2.725 78 2480 0.758 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LT…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 1 of 47 Appendix A RF Test Data for BT V5.0(BDR/EDR) (Conducted Measurement) Product Name: PROTABL SPEAKERPHONE Trade Mark: INNOTRIK, AUCTOPUS Test Model: BT-31S-C Environmental Conditions Temperature: 21.3 C Relative Humidity: 49.6% ATM Pressure: 100.0 kPa Test Engineer: Carl Fu Supervised by: Li Huan A.1 Maximum Conducted Peak Output Power Mode Channel. Maximum Peak Output Power [dBm] Limit [dBm] Verdict GFSK LCH 1.835 21 PASS MCH 0.058 21 PASS HCH -1.884 21 PASS π/4DQPSK LCH 4.110 21 PASS MCH 2.245 21 PASS HCH 0.323 21 PASS 8DPSK LCH 4.557 21 PASS MCH 2.725 21 PASS HCH 0.758 21 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 2 of 47 Test Graphs GFSK/LCH GFSK/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 3 of 47 GFSK/HCH π/4DQPSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 4 of 47 π/4DQPSK/MCH π/4DQPSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 5 of 47 8DPSK/LCH 8DPSK/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 6 of 47 8DPSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 7 of 47 A.2 20dB Bandwidth Mode Channel. 20dB Bandwidth [MHz] Limit [MHz] Verdict GFSK LCH 0.9512 Not Specified PASS MCH 0.9518 Not Specified PASS HCH 0.9514 Not Specified PASS π/4DQPSK LCH 1.320 Not Specified PASS MCH 1.318 Not Specified PASS HCH 1.319 Not Specified PASS 8DPSK LCH 1.300 Not Specified PASS MCH 1.302 Not Specified PASS HCH 1.301 Not Specified PASS Test Graphs GFSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 8 of 47 GFSK/MCH GFSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 9 of 47 π/4DQPSK/LCH π/4DQPSK/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 10 of 47 π/4DQPSK/HCH 8DPSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 11 of 47 8DPSK/MCH 8DPSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 12 of 47 A.3 Carrier Frequency Separation Mode Channel. Carrier Frequency Separation [MHz] Limit [MHz] Verdict GFSK LCH 1.044 0.635 PASS MCH 1.186 0.635 PASS HCH 1.064 0.635 PASS π/4DQPSK LCH 0.908 0.880 PASS MCH 1.186 0.880 PASS HCH 1.050 0.880 PASS 8DPSK LCH 1.098 0.868 PASS MCH 0.910 0.868 PASS HCH 1.048 0.868 PASS Test Graphs GFSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 13 of 47 GFSK/MCH GFSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 14 of 47 π/4DQPSK/LCH π/4DQPSK/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 15 of 47 π/4DQPSK/HCH 8DPSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 16 of 47 8DPSK/MCH 8DPSK/HCH A.4 Hopping Channel Number Mode Channel. Number of Hopping Channel [N] Limit [N] Verdict GFSK Hop 79 >=15 PASS π/4DQPSK Hop 79 >=15 PASS 8DPSK Hop 79 >=15 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 17 of 47 Test Graphs GFSK/Hop π/4DQPSK/Hop SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 18 of 47 8DPSK/Hop SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 19 of 47 A.5 Dwell Time Mode Packet Channel Burst Width [ms/hop/ch] Total Hops[hop*ch] Dwell Time[s] Limit [s] Verdict GFSK DH5 LCH 2.9 106.7 0.309 0.4 PASS DH5 MCH 2.9 106.7 0.309 0.4 PASS DH5 HCH 2.9 106.7 0.309 0.4 PASS π/4DQPSK 2DH5 LCH 2.9 106.7 0.309 0.4 PASS 2DH5 MCH 2.9 106.7 0.309 0.4 PASS 2DH5 HCH 2.9 106.7 0.309 0.4 PASS 8DPSK 3DH5 LCH 2.9 106.7 0.309 0.4 PASS 3DH5 MCH 2.9 106.7 0.309 0.4 PASS 3DH5 HCH 2.9 106.7 0.309 0.4 PASS Test Graphs GFSK_DH5/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 20 of 47 GFSK_DH5/MCH GFSK_DH5/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 21 of 47 π/4DQPSK _2DH5/LCH π/4DQPSK _2DH5/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 22 of 47 π/4DQPSK _2DH5/HCH 8DPSK _3DH5/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 23 of 47 8DPSK _3DH5/MCH 8DPSK _3DH5/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 24 of 47 A.6 RF Conducted Spurious Emissions Mode Channel Pref [dBm] Max. Level [dBm] Limit [dBm] Verdict GFSK LCH 1.401 -37.069 -18.599 PASS MCH -0.273 -37.782 -20.273 PASS HCH -2.202 -37.704 -22.202 PASS π/4DQPSK LCH 1.526 -37.500 -18.474 PASS MCH -0.291 -37.599 -20.291 PASS HCH -2.197 -37.471 -22.197 PASS 8DPSK LCH 1.494 -36.245 -18.506 PASS MCH -0.25 -36.541 -20.250 PASS HCH -2.206 -37.270 -22.206 PASS GFSK_LCH_Graphs Pref SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 25 of 47 Puw SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 26 of 47 GFSK_MCH_Graphs Pref Puw SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 27 of 47 GFSK_HCH_Graphs Pref Puw SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA Page 28 of …

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 36 FCC TEST REPORT FOR Shenzhen Innotrik Technology Co., Ltd. PROTABL SPEAKERPHONE Test Model: BT-31S-C Additional Model No.: I-31, BT-31, BT-31S, BT-31-C Prepared for : Shenzhen Innotrik Technology Co., Ltd. Address : Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Prepared by : Shenzhen LCS Compliance Testing Laboratory Ltd. Address : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel : (+86)755-82591330 Fax : (+86)755-82591332 Web : www.LCS-cert.com Mail : [email protected] Date of receipt of test sample : December 30, 2020 Number of tested samples : 2 Sample No. ： 210104121B-1, 210104121B-2 Serial number : Prototype Date of Test : December 30, 2020~ January 22, 2021 Date of Report : January 26, 2021 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 36 FCC TEST REPORT FCC CFR 47 PART 15 C (15.247) Report Reference No. ....................... : LCS210104121AEA Date of Issue ......................................... : January 26, 2021 Testing Laboratory Name ................. : Shenzhen LCS Compliance Testing Laboratory Ltd. Address ................................................. : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Testing Location/ Procedure ................ : Full application of Harmonised standards ■ Partial application of Harmonised standards □ Other standard testing method □ Applicant’s Name ............................... : Shenzhen Innotrik Technology Co., Ltd. Address ................................................. : Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Test Specification Standard ............................................... : FCC CFR 47 PART 15 C (15.247) Test Report Form No............................ : LCSEMC-1.0 TRF Originator ..................................... : Shenzhen LCS Compliance Testing Laboratory Ltd. Master TRF .......................................... : Dated 2011-03 Shenzhen LCS Compliance Testing Laboratory Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen LCS Compliance Testing Laboratory Ltd. is acknowledged as copyright owner and source of the material. Shenzhen LCS Compliance Testing Laboratory 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. Test Item Description. ........................ : PROTABL SPEAKERPHONE Trade Mark ........................................... : INNOTRIK, AUCTOPUS Test Model ........................................... : BT-31S-C Ratings ................................................. : Input: DC 5V, 500mA DC 3.7V by Rechargeable Li-ion Battery, 2000mAh Result ................................................. : Positive Tested by: Compiled by: Approved by: Vera Deng/ Administrator Jin Wang/ Technique principal Gavin Liang / Manager SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 36 FCC -- TEST REPORT Test Result Positive The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Test Report No. : LCS210104121AEA January 26, 2021 Date of issue Test Model.............................. : BT-31S-C EUT......................................... : PROTABL SPEAKERPHONE Applicant............................... : Shenzhen Innotrik Technology Co., Ltd. Address................................... : Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Telephone............................... : / Fax.......................................... : / Manufacturer......................... : Shenzhen Innotrik Technology Co., Ltd. Address................................... : Room 1302-1307, Building No.13, Qinchengda Paradise, District 22, Lingzhiyuan Community, Xin’an Street, Bao’an District, Shenzhen; China Telephone............................... : / Fax.......................................... : / Factory................................... : / Address................................... : / Telephone............................... : / Fax.......................................... : / SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 36 Revision History Revision Issue Date Revisions Revised By 000 January 26, 2021 Initial Issue Gavin Liang SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C Report No.: LCS210104121AEA This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 5 of 36 TABLE OF CONTENTS Description Page 1.GENERAL INFORMATION ...................................................................................................... 6 1.1 Description of Device (EUT) .........................…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C _______________________________________________________________________________________________ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 2 Test Setup Photos of the EUT Test Setup Photo(s) of Radiated Emissions Measurement Fig. 1 Fig. 2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARKF-BT-31S-C _______________________________________________________________________________________________ This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 2 Test Setup Photo(s) of Conducted Emissions Measurement Fig. 3