The receiving end of an AC 220V

Transmitter uses a 9V battery (a gift shop)

* 100 to 180 meters away from the exchange over wireless digital doorbell

· Soft buzz + hits music， sound and light remind
· Classic pop， to meet the needs of a variety of residential， high-rise buildings and hearing-impaired people have.
· Simple， flexible wireless installation design， obviating the trouble and expense of installation， decoration does not affect the appearance.
· Built-in dual stereo speakers sound， so the sound crisp， sweet， especially for homes， offices， factories， and other places use the tourist industry
· Minimal power switch built-in replaceable battery， no power when not pressed!

Two kinds of ringtones choice， 100 meters away from the receiver， wireless digital doorbell