Details:

110V Wireless Door Bell Digital Chime Doorbell with 2 Bell + 1 Remote Button
With 38 Melody Music
Easy to install， with double side stickers at the back of the remote button
Flash light on when visitors pressing the remote button
Operating range: up to 150 meters(open area)
The remote button Powered by 1 x 12V 23A battery (included)
Suitable for Two-flat Plug-in AC supply house， office， unit， shop， warehouse， shed， and garage， etc.
Specifications:
Power: ≤ 2W
Working frequency: 315MHZ
Receiver operating voltage: 110V
Color: White
Material: Plastic
Size: as the picture shows
Each item will be tested and packed carefully before we ship it
Package:
1 x remote button
2 x doorbell
1 x A23 battery