2A7DW-T-W42.4G Wireless video transmitte

Product Features: U U ser Manual 2.4G Wireless video transmitter Power Supply DC12V Consumption Current 150mA Tx Channel 1 channel T/R Frequency 2.4G Output Power 200mW Unobstructed Effective Range 150 ~ 200 m Operating temperature -10°c ~ +50°c Transmitter Dimension L8cm*W4cm*H2cm Receiver Dimension L8cm*W4cm*H2cm Weight (Tx) 58g Package PE Bag RCA Wire Connection: Receiver 4PIN Wire Connection: Receiver Transmitter Transmitter Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: 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. FCC Statement: 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.

TOPWELL INT'L ELECTRONICS CO.,LTD Agent Authorization Company: TOPWELL INT'L ELECTRONICS CO.,LTD Address: 604, building B4, Anle Industrial Zone, 172 Hangcheng Avenue, Sanwei community, Hangcheng street, Bao'an District, Shenzhen Product Name: 2.4G Wireless video transmitter Model Number(s): 2.4G Wireless video transmitter 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. Date: May 17, 2022 Signature: Name: Eric Sun Title: manager Company: TOPWELL INT'L ELECTRONICS CO.,LTD

TOPWELL INT'L ELECTRONICS CO.,LTD Date: May 17, 2022 Offic e of Engineering Technology Federal Communications Commission 743 5 Oakland Mill s Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2A7DW-T-W4 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 Part s List Operational Description Tune -up Procedure 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705 . OR For 180 days pursuant to 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:Eric Sun Title: manager

TX/RX ANT

SIZE:30*15mm Label place 2.4G Wireless video transmitter MODEL:T-W4 FCC ID:2A7DW-T-W4 Rating: DC 12V input

Project No.: ZKT-220426L2748 Page 1 of 30 FCC TEST REPORT FCC ID:2A7DW-T-W4 Report Number. ................................ : ZKT-220426L2748 Date of Test ...................................... : Apr.25, 2022 -- May 13, 2022 Date of issue .................................... : May 13, 2022 Total number of pages ..................... : 30 Test Result ..................................... : PASS Testing Laboratory. ........................... : Shenzhen ZKT Technology Co., Ltd. Address .......................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ............................ : TOPWELL INT’L ELECTRONICS CO.,LTD Address .......................................... : 604, building B4, Anle Industrial Zone, 172 Hangcheng Avenue, Sanwei community, Hangcheng street, Bao'an District, Shenzhen Manufacturer's name ..................... : TOPWELL INT’L ELECTRONICS CO.,LTD Address .......................................... : 604, building B4, Anle Industrial Zone, 172 Hangcheng Avenue, Sanwei community, Hangcheng street, Bao'an District, Shenzhen Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.249 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method ............. : N/A Test Report Form No. .................... : TRF-EL-111_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF .................................... : Dated: 2020-01-06 This device described above has been tested by ZKT, and 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 ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................... : 2.4G Wireless video transmitter Trademark ...................................... : / Model/Type reference ...................... : T-W4 Ratings ............................................. : DC 12V from battery or others Project No.: ZKT-220426L2748 Page 2 of 30 Testing procedure and testing location: Testing Laboratory ................................... : Shenzhen ZKT Technology Co., Ltd. Address 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Alen He Tested by (name + signature) .................... : Joe Liu Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-220426L2748 Page 3 of 30 Table of Contents Page 1.VERSION5 2.1SUMMARY OF TEST RESULTS 6 2.1TEST FACILITY 7 2.2 MEASUREMENT UNCERTAINTY 7 3.GENERAL INFORMATION8 3.1 GENERAL DESCRIPTION OF EUT8 3.2 DESCRIPTION OF TEST MODES9 3.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED9 3.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE)9 4.EMC EMISSION TEST11 4.1 CONDUCTED EMISSION MEASUREMENT11 4.1.1 POWER LINE CONDUCTED EMISSION LIMITS 11 4.1.2 TEST PROCEDURE 11 4.1.3 DEVIATION FROM TEST STANDARD 11 4.1.4 TEST SETUP 12 4.1.5 EUT OPERATING CONDITIONS 12 4.2 RADIATED EMISSION MEASUREMENT 13 4.2.1 RADIATED EMISSION LIMITS 13 4.2.2 TEST PROCEDURE 14 4.2.3 DEVIATION FROM TEST STANDARD 14 4.2.4 TEST SETUP 14 4.2.5 EUT OPERATING CONDITIONS 15 5.BANDWIDTH OF FREQUENCY BAND EDGE20 5.1 TEST REQUIREMENT: 20 5.2 TEST PROCEDURE 20 ABOVE 1GHZ TEST PROCEDURE AS BELOW: 20 5.6 TEST RESULT 22 6.CHANNEL BANDWIDTH23 6.1 APPLIED PROCEDURES / LIMIT 23 6.2 TEST PROCEDURE 23 6.3 DEVIATION FROM STANDARD 23 6.4 TEST SETUP 23 6.5 EUT OPERATION CONDITIONS 23 6.6 TEST RESULTS 24 7.ANTENNA REQUIREMENT25 Project No.: ZKT-220426L2748 Page 4 of 30 Table of Contents Page 8.TEST SETUP PHOTO26 9.EUT CONSTRUCTIONAL DETAILS27 Project No.: ZKT-220426L2748 Page 5 of 30 1.VERSION Report No. Version Description Approved ZKT-220426L2748 Rev.01 Initial issue of report May 13, 2022 Project No.: ZKT-220426L2748 Page 6 of 30 2.1SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.249) , Subpart C Standard Section Test Item Judgment Remark FCC part 15.203 Antenna requirement PASS FCC part 15.207 AC Power Line Conducted Emission N/A FCC part 15.249 Fundamental &Radiated Spurious Emission Measurement PASS FCC part 15.215 20dB Occupied Bandwidth PASS FCC part 15.205 Band Edge PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Project No.: ZKT-220426L2748 Page 7 of 30 2.1TEST FACILITY Shenzhen ZKT Technology Co., Ltd. Add. : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China FCC Test Firm Registration Number: 692225 Designation Number: CN1299 IC Registered No.: 27033 2.2 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 Conducted Emission Test ±1.38dB 2 RF power conducted ±0.16dB 3 Spurious emissions conducted ±0.21dB 4 All emissions radiated(<1G) ±4.68dB 5 All emissions radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% Project No.: ZKT-220426L2748 Page 8 of 30 3. GENERAL INFORMATION 3.1 GENERAL DESCRIPTION OF EUT Product Name: 2.4G Wireless video transmitter Model No.: T-W4 Model Different.: / Serial No.: / Hardware Version: V1.5 Software Version: V1.0 Sample(s) Status: Engineer sample Channel numbers: 1 Channel separation: 2414MHz Modulation technology: ASK Antenna Type: glue stick antenna Antenna gain: 1.8 dBi Max Power supply: DC 12V from battery or others Operation Frequency each of channel Channel Frequency 1 2414 Note: In section 15.31(m), regards to the operating frequency ra…

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