• 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