2AR95-WHM07doorbell

FCC Warnning: 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 againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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 environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

Sincerely, Name/Title： Wenbing Wu/Manager Company: Shenzhen Wenhui Technology Development Co., Ltd. Address: 401, No.7, Xingye 3rd Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen China Phone: 13798446585 Fax: N/A E-Mail: [email protected]

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 4 Product Name: doorbell Model No.: WHM07 EUT Constructional Details External Photo Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 4 Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 4 Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 4 ------End------

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location Model No.: WHM07 FCC ID : 2AR95-WHM07

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 3 Product Name: doorbell Model No.: WHM07 EUT Constructional Details Internal Photo Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 3 Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 3 ------End------

RF Exposure evaluation FCC ID: 2AR95-WHM07 1.1. Applicable Standard According to §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 §1.1310 and §2.1093 RF exposure requirement KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2. Requirement 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.23 “ [(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 5) in section 4.1 is applied to determine SAR test exclusion. 1.3. Manufacturing tolerance Freq. (MHz) Field strength(max)(dBuV/m) EIRP (max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] 433.96MHz 85.94 -9.32 -9.0±1 -8.0 Note: EIRP=E-104.8+20logD, D=3 Page 2 of 2 2. E v a l u a t i o n R e s u l t Evaluation Results Band/Mode f (GHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW SRD 0.433 5 -8.0 0.1585 0.0209<3.0 Yes 3. C o n c l u s i o n The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06 .....................End of Report.........................

1. Antenna Description: Antenna type PCB antenna Model WHM07 Frequency range 400-500 MHz Manufacturer Shenzhen Wenhui Technology Development Co., Ltd ANT Peak Gain 0.00 dBi 2. Antenna Photo:

Shenzhen HTT Technology Co., Ltd. FCC PART 15 SUBPART C TEST REPORT FCC PART 15.231 Report Reference No. ..................... : FCC ID. ........................................... : HTT202306417F01 2AR95-WHM07 Compiled by ( position+printed name+signature) .. : File administrators Supervised by ( position+printed name+signature) .. : Project Engineer Approved by ( position+printed name+signature) .. : RF Manager Date of issue ..................................... : Jun.30,2023 Testing Laboratory Name .............: Shenzhen HTT Technology Co.,Ltd. Address ............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : Shenzhen Wenhui Technology Development Co., Ltd Address ............................................ : 401, No.7, Xingye 3rd Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen Test specification ...........................: Standard ........................................... : FCC Part 15.231 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT Technology Co.,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 ..................... : doorbell Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen Wenhui Technology Development Co., Ltd Model/Type reference....................... : WHM07 Listed Models .................................. : WHM01, WHM02, WHM03, WHM04, WHM05, WHM06, WHM08, WHM09, WHM10 Ratings ............................................. : DC 12.0V From Battery Modulation ....................................... : ASK Frequency .......................................... 433.9600MHz Result................................................ : PASS Report No.: HTT202306417F01 Page 2 of 18 T E S T R E P O R T Equipment under Test : doorbell Model /Type : WHM07 Listed Models : WHM01, WHM02, WHM03, WHM04, WHM05, WHM06, WHM08, WHM09, WHM10 Model Declaration : PCB board, structure and internal of these model(s) are the same, So no additional models were tested. Applicant : Shenzhen Wenhui Technology Development Co., Ltd Address : 401, No.7, Xingye 3rd Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen Manufacturer : Shenzhen Wenhui Technology Development Co., Ltd Address : 401, No.7, Xingye 3rd Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen Test Result: PASS 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. Report No.: HTT202306417F01 Page 3 of 18 Contents 1 T E S T S T A N D A R D S .................................................................. 4 2 S U M M A R Y ............................................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 Block Diagram of Test Setup 5 2.6 Special Accessories 5 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T ............................................................... 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S ............................................ 10 4.1 AC Power Conducted Emission 10 4.2 Radiated Emission 11 4.3 20dB Bandwidth 15 4.4 Deactivation Time 16 4.5 Antenna Requirement 17 5 T E S T S E T U P P H O T O S O F T H E EUT .......................................... 18 6 P H O T O S O F T H E E U T ............................................................. 18 Report No.: HTT202306417F01 Page 4 of 18 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.231:Periodic operation in the band 40.66-40.70 MHz and above 70 MHz. ANSI C63.10:2013 : American National Standard for Testing Unlicensed Wireless Devices Report No.: HTT202306417F01 Page 5 of 18 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Jun.25,2023 Testing commenced on : Jun.25,2023 Testing concluded on : Jun.30,2023 2.2 Product Description Product Name: doorbell Model/Type reference: WHM07 Testing sample ID： HTT202306417-1# (Engineer sample), HTT202306417-2#(Normal sample) Power supply: DC 12.0V From Battery Modulation: ASK Operation frequency: 433.9600MHz Channel number: 1 Antenna type: PCB antenna Antenna gain: 0 dBi 2.3 Equipment Under Test Power supply system utilised Power supply voltage : ○ 230V / 50 Hz ○ 120V / 60Hz ○ 12 V DC ○ 24 V DC ● Other (specified in blank below) DC 12.0V From Battery 2.4 Short description of the Equipment under Test (EUT) This is a doorbell For more details, refer to the user’s manual of the EUT. 2.5 Block Diagram of Test Setup 2.6 Special Accessories Follow auxiliary equipment(s) test with EUT that provided by the manufacturer or laboratory is listed as follow: Description Manufacturer Model Technical Parameters Certificate Provided by / / / / / / / / / / / / EUT Battery Report No.: HTT202306417F01 Page 6 of 18 2.7 Related Submittal(s) / Grant (s) This submittal(s) (test report) is intended for the device filing to comply with Section 15.231 of the FCC Part 15, Subpart C Rules. 2.8 Modifications No modifications were implemented to meet testing criteria. Report No.: HTT202306417F01 Page 7 of 18 3 T …

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202306417 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 1 Product Name: doorbell Model No.: WHM07 Test Setup Photo Radiated Emission ------End------