Features:
Four levels of adjustable volume from 20db to 80db.
Can be used with a wirelessly video doorbell. After pairing the doorbell with the video doorbell, when the outdoor doorbell rings, the indoor's make sounds.
There are 52 different chimes to choose from.
Wireless design for easy installation and convenient use.
Suitable for home, office, villa, hotels, shops, etc.

Specifications:
Material: ABS
Plug type: 4 types(optional)
Color: black
Ring-Tone: 52 ring-tones
Volume: 4 levels 20-80dB
Package Weight: 100g/3.53oz
Package Size: 95*95*70mm/3.74*3.74*2.76in

Note:
There are 4 different plug sizes to choose from, please choose the one suitable for your country.

Packing List:
1*Doorbell