Features :

Simple, vivid and no-wire installation design avoid troubles and save money when in installation and don't effect decorate environment.
Remote control range up to 120 meters in open air, suitable for homes and high floor houses.
Build in anti-interference design, avoid the interference between users.
16 Polyphonic melody / chords 36 musics for selection, you can select your favorite.
Easy to install, with double-side stickers at the back of the remote button.
LED Flash light indicator when visitor pressing the remote button.
IP44 waterproof bell push.
No wiring required.
Delicate streamlined appearance shows the special tastes of the host.

How to use :
Open the battery cover of doorbell transmitter, insert 1 pc "12V 23 A" battery and assemble back the battery cover.
Stick the remote control on the door station with a double - sided tape.
Doorbell Receiver plugs straight in to a wall socket (not requiring any batteries).
Package includes :

1 x Wireless Doorbell Receiver
1 x Doorbell Transmitter
1 x Double Sided Adhesive