Wireless Smart Doorbell Remote Control 32 Tune Songs Intelligent Door Ring Home Office Hotel Security Transmitter+Receiver
Feature:
No wiring, easy installation.
32 ringtones optional.
Transmitter (button): 23A 12V, (not including small battery).
Receiver: AC, DC. Just plug in the AC. DC (2 AA batteries) needs to be prepared by the buyer.
The light of the incoming bell flashes to remind the hearing-impaired elderly and the hearing-impaired that the doorbell is ringing.
Transmitter installation (key): A small 12V23A battery is delivered. To install the battery, use a flat-blade screwdriver to pry off the back cover. Comes with double-sided adhesive, can be directly attached to the anti-theft door. The rear cover has screw holes reserved for fixing on the wall.

Specification:
Input voltage: DC 3V
Bells: 2 x 1.5V AA battery(not included)
Bell battery: 12V 23A alkaline battery (not included)
Doorbell type: wireless
DIY supplies: electric
Model: 802D/803D
Doorbell size: 96*64mm/3.78*2.52"
Remote control size: 72*38mm/2.83*1.5"
Color: Blue/Black
Material: plastic

Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-3cm measuring deviation due to manual measurement.