Powered by 3AA 1.5V batteries.
Effective Detecting Distance: 10m.
Effective Detecting Angle: about 110 degree for both left and right.
Specially designed with extraordinary performance, energy saving and easy to use.
Comes with 8 special melodies for your optional.
When the guest comes into the detecting area, it will sound automatically.
Strong sensitivity, non-mislead and anti-interference technology makes it effectively detect the movement of the human in different angles.
It is suitable for houses, hotels, factories or any other places.
Weight: 133.75 g
Size: 21143 cm
1 × Wireless Remote Control Guest Door Bell (White)