Product Description : Vistor chime, automatically with ding dong melody
Advantage : Ideal for observing visitors to offices, homes, shops and clinics
Signal Output : Choice for "Chime" or "Welcome" switch "ding dong" or "ding dong, Welcome" signal
Functionality : Under Normal light confition, the visitor Chime detects up to 4-5 meters.
Misc : Easy installation onto wall or ceiling using screws or the adhesive tape enclosed
Battery Type : 2 x 1.5v AAA batteries