2ATK8SH-PT-002Circrane Solar Wireless Pool Thermometer

2024-7-2270克双胶纸 FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 interfer- ence 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 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environ- ment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Covered Equipment Certification Attestation Letter 8/26/2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2ATK8SH-PT-002 Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Steven Li Title: Manager Company Name: Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Date: 8/26/2024

Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd 2024-08-26 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2ATK8SH-PT-002 Product Name: Circrane Solar Wireless Pool Thermometer Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name: Steven Li Title: Manager Company: Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd

Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd 2024-08-26 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act asAgent On our behalf, I appoint SHENZHEN TONGCE TESTING LAB / 2101 & 2201, Zhenchang Factory Renshan Industrial Zone, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, 518103, People's Republic of China (Name of Agent company name andaddress) 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 Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonourbehalf,Iack nowledgethatallresponsibilityforcomplyingwiththetermsandconditionsforcertification,stillres ideswith Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd / No.2 Binxi south Rd Dayin Industrial Park, Yuyao, Zhejiang, China (Applicant Nameandaddress) <Signature> Name: Steven Li Title: Manager Applicant Company: Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd

Page 1 of 4 Appendix B: Photographs of EUT Product: Circrane Solar Wireless Pool Thermometer Model: SH-PT-002 External Photos Page 2 of 4 Page 3 of 4 Page 4 of 4

Label Artwork and Location Model: AZ-001 Label: Size: L*W=50*7mm Location

Page 1 of 5 Appendix B: Photographs of EUT Product: Circrane Solar Wireless Pool Thermometer Model: SH-PT-002 Internal Photos Antenna Page 2 of 5 Page 3 of 5 Page 4 of 5 Page 5 of 5

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID. ............................ : 2ATK8SH-PT-002 Test Report No. ............... : TCT240820E021 Date of issue ................... : Aug. 26, 2024 Testing laboratory .......... : SHENZHEN TONGCE TESTING LAB Testing location/ address: 2101 & 2201, Zhenchang Factory Renshan Industrial Zone, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, 518103, People's Republic of China Applicant's name ............ : Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Address ........................... : No.2 Binxi south Rd Dayin Industrial Park, Yuyao, Zhejiang, China Manufacturer's name ... : Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Address ........................... : No.2 Binxi south Rd Dayin Industrial Park, Yuyao, Zhejiang, China Standard(s) ..................... : KDB 447498 D01 General RF Exposure Guidance v06 Product Name ................. : Circrane Solar Wireless Pool Thermometer Trade Mark ...................... : Model/Type reference..... : SH-PT-002 Rating(s).......................... : Rechargeable Li-ion Battery DC 3.7V Date of receipt of test item ......................................... : Aug. 20, 2024 Date (s) of performance of test ................................... : Aug. 20, 2024 ~ Aug. 26, 2024 Tested by (+signature) ... : Ronaldo LUO Check by (+signature) .... : Beryl ZHAO Approved by (+signature): Tomsin General disclaimer: This report shall not be reproduced except in full, without the written approval of SHENZHEN TONGCE TESTING LAB. This document may be altered or revised by SHENZHEN TONGCE TESTING LAB personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT240820E021 Page 2 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Table of Contents 1. General Product Information .................................................................. 3 1.1. EUT description ..................................................................................................... 3 1.2. Model(s) list ............................................................................................................ 3 2. General Information ................................................................................. 4 2.1. Test environment and mode ................................................................................. 4 2.2. Description of Support Units ................................................................................ 4 3. Facilities and Accreditations .................................................................. 5 3.1. Facilities ................................................................................................................. 5 3.2. Location ................................................................................................................. 5 4. Test Results and Measurement Data ..................................................... 6 4.1. Requirements ......................................................................................................... 6 4.2. Test Result ............................................................................................................. 6 Report No.: TCT240820E021 Page 3 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. General Product Information 1.1. EUT description Product Name ....................... : Circrane Solar Wireless Pool Thermometer Model/Type reference........... : SH-PT-002 Sample Number....................: TCT240820E020-0101 Operation Frequency ........... : 433.92MHz Modulation Type ................... : ASK Antenna Type ........................ : Spiral Antenna Antenna Gain ........................ : 0dBi Rating(s)................................ : Rechargeable Li-ion Battery DC 3.7V Note: The antenna gain listed in this report is provided by applicant, and the test laboratory is not responsible for this parameter. 1.2. Model(s) list None. Report No.: TCT240820E021 Page 4 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. General Information 2.1. Test environment and mode Item Normal condition Temperature +25ºC Voltage DC 3.7V Humidity 56% Atmospheric Pressure: 1008 mbar Test Mode: Transmitting mode: Keep the EUT in continuous transmitting by select channel 2.2. Description of Support Units The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Equipment Model No. Serial No. FCC ID Trade Name / / / / / Note: 1. All the equipment/cables were placed in the worst-case configuration to maximize the emission during the test. 2. Grounding was established in accordance with the manufacturer’s requirements and conditions for the intended use. 3. For conducted measurements (Output Power, 20dB Occupied Bandwidth, Carrier Frequencies Separation, Hopping Channel Number, Dwell Time, Spurious Emissions), the antenna of EUT is connected to the test equipment via temporary antenna connector, the antenna connector is soldered on the antenna port of EUT, and the temporary antenna connector is listed in the Test Instruments. Report No.: TCT240820E021 Page 5 of 6 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. Facilities and Accreditations 3.1. Facilities The test facility is recognized, certified, or accredited by the following organizations: ● FCC - Registration No.: 645098 SHENZHEN TONGCE TESTING LAB Designation Number: CN1205 The testing lab has been registered and fully described in a report with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. ● IC - Registration No…

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Specification Item number name Model and specification 1 868 Requirements Spiral antenna /PVC coated wire, wire outer diameter Φ1.0* coil diameter Φ3* Total length 172mm counterclockwise winding, one end peeling tinned 3mm ROHS 2 Standing-wav e ratio ≤2 gain 0dbi impedance 50Ω Length 172MM 3 Manufacturer Shenzhen Longda Zhi Technology Co., Ltd L=172MM

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID. ............................ : 2ATK8SH-PT-002 Test Report No. ............... : TCT240820E020 Date of issue ................... : Sep. 12, 2024 Testing laboratory .......... : SHENZHEN TONGCE TESTING LAB Testing location/ address: 2101 & 2201, Zhenchang Factory Renshan Industrial Zone, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, 518103, People's Republic of China Applicant's name ............ : Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Address ........................... : No.2 Binxi south Rd Dayin Industrial Park, Yuyao, Zhejiang, China Manufacturer's name ... : Ningbo Shuanghe Hongsheng Electronic Technology Co., Ltd Address ........................... : No.2 Binxi south Rd Dayin Industrial Park, Yuyao, Zhejiang, China Standard(s) ..................... : FCC CFR Title 47 Part 15 Subpart C Section 15.231 Product Name ................. : Circrane Solar Wireless Pool Thermometer Trade Mark ...................... : Model/Type reference..... : SH-PT-002 Rating(s).......................... : Rechargeable Li-ion Battery DC 3.7V Date of receipt of test item ......................................... : Aug. 20, 2024 Date (s) of performance of test ................................... : Aug. 20, 2024 ~ Sep. 12, 2024 Tested by (+signature) ... : Ronaldo LUO Check by (+signature) .... : Beryl ZHAO Approved by (+signature): Tomsin General disclaimer: This report shall not be reproduced except in full, without the written approval of SHENZHEN TONGCE TESTING LAB. This document may be altered or revised by SHENZHEN TONGCE TESTING LAB personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT240820E020 Page 2 of 33 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com Table of Contents 1. General Product Information .................................................................. 3 1.1. EUT description ..................................................................................................... 3 1.2. Model(s) list ............................................................................................................ 3 2. Test Result Summary .............................................................................. 4 3. General Information ................................................................................. 5 3.1. Test Environment and Mode ................................................................................. 5 3.2. Description of Support Units ................................................................................ 5 4. Facilities and Accreditations .................................................................. 6 4.1. Facilities ................................................................................................................. 6 4.2. Location ................................................................................................................. 6 4.3. Measurement Uncertainty ..................................................................................... 6 5. Test Results and Measurement Data ..................................................... 7 5.1. Antenna Requirement ........................................................................................... 7 5.2. Conducted Emission ............................................................................................. 8 5.3. Radiated Emission Measurement ........................................................................ 9 5.4. Occupied Bandwidth ........................................................................................... 19 5.5. Transmission time and silent time ..................................................................... 21 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT240820E020 Page 3 of 33 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. General Product Information 1.1. EUT description Product Name ....................... : Circrane Solar Wireless Pool Thermometer Model/Type reference........... : SH-PT-002 Sample Number....................: TCT240820E020-0101 Operation Frequency ........... : 433.92MHz Modulation Technology ....... : ASK Antenna Type ........................ : Spiral Antenna Antenna Gain ........................ : 0dBi Rating(s)................................ : Rechargeable Li-ion Battery DC 3.7V Note: The antenna gain listed in this report is provided by applicant, and the test laboratory is not responsible for this parameter. 1.2. Model(s) list None. Report No.: TCT240820E020 Page 4 of 33 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. Test Result Summary Requirement CFR 47 Section Result Conduction Emission, 0.15MHz to 30MHz §15.207 N/A Transmission time and silent time 15.231(e) PASS Radiation Emission §15.231(e), §15.205, §15.209, §15.35 PASS Occupied Bandwidth §15.231(c) PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: TCT240820E020 Page 5 of 33 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. General Information 3.1. Test Environment and Mode Operating Environment: Condition Radiated Emission Temperature: 24.8 C Humidity: 52 % RH Test Mode: Operation mode: Keep the EUT in continuous transmitting with modulation The sample was placed (0.8m below 1GHz, 1.5m above 1GHz) above the ground plane of 3m chamber. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigated all operating modes, ro…

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