VBA-DB400FACWireless Doorbell

Battery Wall Bracket Push Button 1 push button, 1 door chime, 1 mounting bracket, 1 12V 23A alkaline battery, 2 screws, 2 anchors and 1 screw driver Leave message here W I R E L E S S D O O R B E L L User Manual Please carefully read this user manual before using and installation IP55 waterproof transmitter 58 selectable ringtones 5-level adjustable volume includes mute Over 500 feet operation range (open air) Easy to install and use Expandable, easy to add additional transmitter or receivers (up to 58) Low power consumption        Voltage of plug-in receiver Power consumption of receiver Power consumption of transmitter Waterproof rating Battery in button Working range Selectable ringtone Volume range Expandable (Yes or No) Working frequency AC 230V ~, 50Hz <0.5W <10mW IP55 1* 12V 23A alkaline battery (included) 150m in open air 58 0-110dB, 5 levels Ye s LED Light Volume Control Backward Button Forward Button AC Plug LED Indicator Speaker FCC Caution： 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. Any 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: -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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Ningbo EverFlourish Smart Technology Corp., Ltd 2021.04.19 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Wireless Doorbell Trademark: MODEL : DB400FAC, DB50 DB400AC, DB400, DB400F, DB500, DB500AC, B6, B7 FCC ID: VBA-DB400FAC To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title: James Zhu /Mr. Contact information / address: 77 Wuxiang East Road, Yinzhou, Ningbo, 315111, China

Ningbo EverFlourish Smart Technology Corp., Ltd 2021.04.19 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title: James Zhu /Mr. Contact information / address: 77 Wuxiang East Road, Yinzhou, Ningbo, 315111, China

Ningbo EverFlourish Smart Technology Corp., Ltd Model Difference EUT NAME: Wireless Doorbell Trademark: MODEL : DB400FAC, DB50 DB400AC, DB400, DB400F, DB500, DB500AC, B6, B7 FCC ID: VBA-DB400FAC All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature: Client’s name / title: James Zhu /Mr. Contact information / address: 77 Wuxiang East Road, Yinzhou, Ningbo, 315111, China

External Photos EUT

Size:10*5mm FCC ID: VBA-DB400FAC Label Location

Internal Photos Antenna

No.：BCTC/RF-EMC-005 Page: 1 of 31 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2103960622E Applicant: Ningbo EverFlourish Smart Technology Corp., Ltd Product Name: Wireless Doorbell Model/Type Ref.: DB400FAC, DB50 DB400AC, DB400, DB400F, DB500, DB500AC, B6, B7 Tested Date: 2021-04-01 to 2021-04-09 Issued Date: 2021-04-10 Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 2 of 31 Edition：A.3 FCC ID: VBA-DB400FAC 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 BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Wireless Doorbell Trademark: Model/Type Ref.: DB400FAC, DB50 DB400AC, DB400, DB400F, DB500, DB500AC, B6, B7 Prepared For: Ningbo EverFlourish Smart Technology Corp., Ltd Address: 77 Wuxiang East Road, Yinzhou, Ningbo, 315111, China Manufacturer: Shenzhen Shenan Yangguang Electronics Co., Ltd Address: West of the forth floor, Block 9, No.18, Makan Road, Xili, Nanshan district, Shenzhen City, 518000, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2021-04-01 Sample tested Date: 2021-04-01 to 2021-04-09 Issue Date: 2021-04-10 Report No.: BCTC2103960622E Test Standards FCC Part15.231 ANSI C63.10-2013 Test Results PASS Tested by: Approved by: Eric Yang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 3 of 31 Edition：A.3 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ............................................................ 5 2. TEST SUMMARY ..................................................... 6 3. MEASUREMENT UNCERTAINTY ....................................... 7 4. PRODUCT INFORMATION AND TEST SETUP............................ 8 4.1 Product Information ..................................................... 8 4.2 Test Setup Configuration ................................................ 8 4.3 Support Equipment ..................................................... 8 4.4 Channel List ........................................................... 9 4.5 Test Mode ............................................................. 9 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 10 5.1 Test Facility ........................................................... 10 5.2 Test Instrument Used .................................................. 10 6. CONDUCTED EMISSIONS ............................................ 12 6.1 Block Diagram Of Test Setup ............................................ 12 6.2 Limit ................................................................. 12 6.3 Test procedure ........................................................ 12 6.4 EUT operating Conditions ............................................... 12 6.5 Test Result ........................................................... 12 7. RADIATED EMISSIONS .............................................. 13 7.1 Block Diagram Of Test Setup ............................................ 13 7.2 Limit ................................................................. 14 7.3 Test procedure ........................................................ 15 7.4 EUT operating Conditions ............................................... 17 7.5 Test Result ........................................................... 18 8. BANDWIDTH TEST .................................................. 22 8.1 Block Diagram Of Test Setup ............................................ 22 8.2 Limit ................................................................. 22 1.8KHZ .................................................................. 22 8.3 Test procedure ........................................................ 22 8.4 EUT operating Conditions ............................................... 22 8.5 Test Result ........................................................... 23 9. CALCULATION OF AVERAGE FACTOR ................................ 24 10. TRANSMISSION TERMINATION TIME .................................. 26 10.1 Block Diagram Of Test Setup .......................................... 26 10.2 Limit ................................................................ 26 10.3 Test procedure ....................................................... 26 10.4 Test Result .......................................................... 27 11. ANTENNA REQUIREMENT ........................................... 28 Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 4 of 31 Edition：A.3 11.1 STANDARD REQUIREMENT .......................................... 28 11.2 EUT ANTENNA ...................................................... 28 12. EUT PHOTOGRAPHS ................................................ 29 13. EUT TEST SETUP PHOTOGRAPHS .................................... 30 (Note: N/A means not applicable) Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 5 of 31 Edition：A.3 1. VERSION Report No. Issue Date Description Approved BCTC2103960622E 2021-04-10 Original Valid Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 6 of 31 Edition：A.3 2. TEST SUMMARY The Product has been tested according to the following specifications: No. Test Parameter Clause No Results 1 Conducted Emission 15.207 N/A 2 Fundamental &Radiated Spurious Emission Measurement 15.209,15.231b PASS 3 Occupy Bandwidth 15.231c PASS 4 Transmission termination time 15.231a PASS 5 Antenna Requirement 15.203 PASS Report No.: BCTC2103960622E No.：BCTC/RF-EMC-005 Page: 7 of 31 Edition：A.3 3. MEASUREMENT UNCERTAINTY Where relevant, the following measurement uncertainty levels have been estimated for tests performed on the Product as specified in CISPR 16-4-2. This uncertainty represents an expanded uncertainty expressed at approxima…

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Radiated Measurement Photos