1 x Doorbell push button transmitter + 1 x wireless doorbell + 1 battery pack for trigger push button included in the pack Does not require to be attached to electric points, works on Batteries, you can install the remote buttons in one location. such as front door or back door Flash light turns on when guest presses the remote button With double side stickers at the back side of the remote button. very easy to install Wireless - easy to install - just remove the sticker and paste it to the place of your choice. Remote control range up to 100 meters in open air Simple, Bright and no-wire design avoid troubles and save money as installation charge. Ronfild Remote Control Doorbell is easy to install, with double-side stickers at the back of the remote button. so Wireless Doorbell doesn't affect the decoration.