Wireless Remote Control Doorbell Chime (1 button)

Easy to install, there is double side adhesive in the back.
Work range: 50 meters
No wiring required.
16 Melodies for your selection
Door bell battery: 2 x AA size batteries (not included)
Remote button battery:1 x 12V 23A battery (not included)
Door bell size: 105mm x 75mm
Remote button size: 75mm x 43mm
Package Content: 1x door bell