FCC ID: VBA-DB400FAC Wireless Doorbell

AC Plug Volume Control Backward Button Forward Button Speaker LED Indicator LED Light Push Button Leave message here Wall Bracket Battery 1 push button, 1 door chime, 1 mounting bracket, 1 12V 23A alkaline battery, 2 screws, 2 anchors and 1 screw driver WIRELESS DOORBELL 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 Yes 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: 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, Clients signature:

Clients 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: 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, Clients signature:

Clients 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 Clients signature:

Clients name / title: James Zhu /Mr. Contact information / address: 77 Wuxiang East Road, Yinzhou, Ningbo, 315111, China