*Wireless digital door bell:Simple,vivid and no-wire installation design avoid troubles and save money when in installation and don't effect decorate environment.
*36 melodies for selection,you can select your favorite as you wish.LED indicators: Press the launch button to turn on the transmitter LED indicator light and the transmitter. The receiver receives instructions, and delivers pleasant music to remind you that a guest is coming. In the meanwhile, the "blue" LED light will regularly flicker along with the music.
*Remote control range up to approach 70-110 meters/230ft-360ft in open air,ultra long distance and stable signal.
*Low power design,strong penetration ability,no wiring required and easy for installation(with double-side stickers at the back of the remote button).
*Wide usage scopes especially suitable for homes,offices,factories,hotels, etc.
Receiver operating voltage:DC3V
Outdoor unit power supply: 1*12V23A battery (included)
Indoor unit power supply: 2*AAA battery(not included)
Transmission distance:Approach.70-110 meters/230ft-360ft in open air
Waterproof: NO waterproof function
Outdoor unit size:7.5*3.6*2cm
Indoor unit size:9.5*5.5*2.5cm
Package Size: Approach.19.4*13.3*3cm/7.64*5.24*1.18in
Package Weight: Approach.100g/3.53oz
1* Double-sided Adhesive
1* 12V23A battery