Wireless Digital Doorbell Door Bell with 36 Tune Melody,Wireless Doorbell Kit w/ 36 tones,Portable Wireless Two Door Chime and One Push Button-White Smart looking housing with flash light,flash light on when visitors pressing the remote button. Long operating range: 150 meters (Super long distance digital control). Dimensions of the remote button is approx. 7.50cm x 4.30cm,Dimensions of the door bell is approx. 10.50cm x 7.50cm. Powered by 2 x AA size batteries for the door bell (not included); and 1x 12V type 23A battery for the remote button (included with the package). Waterproof remote button. Easy to install, with double-side stickers at the back of the remote button. No wiring required.36 Melody Music for selection.