Characteristic:

1. Highly sensitivity.

2. Simple and convenient to use, no adjustment is required.

3. The detection distance will not be changed when the battery voltage drops9V- 7V.

4.       Low power consumption, can work for 40 hours continuously.

5.       There is automatic and continues alarm when the battery is used up.

6.       With external rechargeable socket hole.

7.      Alarm: sound and vibration alarm.

 Parameters:

Aplication: airports, railway stations , wharfs important sites and playgrounds etc .