433MHz wireless frequency, remote sensing doorbells
3-level volume, 38 music ringtones
Built-in dual speakers for clear sound
Suitable for home, office, factory, shop, etc.
Specifications:
Power plug: EU
Receiver voltage: 110-240V
Transmitter voltage: 4.5V 3 AA batteries (not included)
Receiver working distance: 200 meters
Transmitter sensing distance: 3-7 meters
Installation: about 2 meters in height
Music: 38 pieces of music
Volume: high, medium, low
Sound: sound + indicator light
Silent: indication