2AG5OPB-521-B2Clip

PB Inc Agent Authorization Company: PB Inc Address: 160 NW Gilman Blvd, Unit 352, Issaquah, WA 98027, United States Product Name: Clip Model Number(s): PB-521-B2 Product Description: Clip We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022-07-01 Name: Li Cheng Title: CEO Company: PB Inc

PB Inc Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/07/01 Subject; Request for Confidentiality FCC ID: 2AG5OPB-521-B2 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Li Cheng Title: CEO

External Photos

Model: PB-521-B2 FCC ID: 2AG5OPB-521-B2 IC : 23453-PB521B2 HVIN：PB-521-B2 Label Location

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID: 2AG5OPB-521-B2 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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 When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 -0.503 0.89 -0±1 1.00 1.26 <5 0.39023 3.00 YES 2.44 -0.166 0.96 -0±1 1.00 1.26 <5 0.39330 3.00 YES 2.480 -0.362 0.92 -0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK Conclusion: For the max result : 0.39651≤ FCC Limit 3.0 for 1g SAR.

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220629010RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 36 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: FCC ID: Trademark: Model Number: Prepared For: Address: Manufacturer: Address: Prepared By: Address: Sample Received Date: Sample tested Date: Issue Date: Report No.: Test Standards Test Results Remark: Clip 2AG5OPB-521-B2 N/A PB-521-B2 PB Inc 160 NW Gilman Blvd, Unit 352, Issaquah, WA 98027 PB Inc 160 NW Gilman Blvd, Unit 352, Issaquah, WA 98027 Shenzhen CTB Testing Technology Co., Ltd. Floor 1&2, Building A, No. 26 of Xinhe Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, China. Jun. 22, 2022 Jun. 22, 2022 to Jun. 28, 2022 Jun. 28, 2022 CTB220629010RFX FCC Part15.247 ANSI C63.10:2013 P ASS This i s Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220629010RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 36 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ......................................................................... 3 2. TEST SUMMARY .................................................................. 4 3. MEASUREMENT UNCERTAINTY .................................................... 5 4. PRODUCT INFORMATION AND TEST SETUP ......................................... 6 4.1 Product Information .................................................................... 6 4.2 Test Setup Configuration ............................................................... 6 4.3 Support Equipment .................................................................... 6 4.4 Channel List .......................................................................... 7 4.5 Test Mode ............................................................................ 7 4.6 Test Environment ...................................................................... 7 5. TEST FACILITY AND TEST INSTRUMENT USED ...................................... 8 5.1 Test Facility ........................................................................... 8 5.2 Test Instrument Used .................................................................. 8 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION .................................................. 15 7.1 Block Diagram Of Test Setup .......................................................... 15 7.2 Limit ................................................................................ 15 7.3 Test procedure ....................................................................... 16 7.4 Test Result .......................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ......................... 24 8.1 Block Diagram Of Test Setup .......................................................... 24 8.2 Limit ................................................................................ 24 8.3 Test procedure ....................................................................... 24 8.4 Test Result .......................................................................... 25 9. COUDUCTED OUTPUT POWER .................................................... 27 9.1 Block Diagram Of Test Setup .......................................................... 27 9.2 Limit ................................................................................ 27 9.3 Test procedure ....................................................................... 27 9.4 Test Result .......................................................................... 28 10. 6DB OCCUPIED BANDWIDTH ...................................................... 30 10.1 Block Diagram Of Test Setup ......................................................... 30 10.2 Limit ............................................................................... 30 10.3 Test procedure ...................................................................... 30 10.4 Test Result ......................................................................... 30 11. POWER SPECTRAL DENSITY ..................................................... 32 11.1 Block Diagram Of Test Setup ......................................................... 32 11.2 Limit ............................................................................... 32 11.3 Test procedure ...................................................................... 32 11.4 Test Result ......................................................................... 32 12. ANTENNA REQUIREMENT ........................................................ 34 13. EUT TEST SETUP PHOTOGRAPHS ................................................. 35 (Note: N/A means not applicable) Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220629010RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 36 …

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Radiated Emission Below 1G Above 1GHz Conducted Emission