Security Alarm Door Entry Announcers - White

Descriptions:

• Advanced microcomputer technology and automatic human sensitivity are applied to qusun saluting quest / alarming doorbell.
• Extraordinary performance.
• Energy saving and easy to use.
• Special sound device. Strong sensitivity.
• Non -mislead and anti-interference technology makes it effectively detect the movement of the human in the detecting area of all environments.
• AC/DC operation meets different needs.
• Suitable for dwelling houses,tier buildings, multiple apartments, hotels, factories, hospitals or any other places.
• Batteries: 3* 6F22.9V batteries(not included)
• Size: 10cm (L) * 6cm (W) * 3cm (D)
• Weight: 140g