Features: 

Transmission Distance: 1-10 km.

255 zones, Each zone can be armed/disarmed separately.

Auto Dial up to 9 preset phone numbers.

Alarm telephone priority, be able to dial to alarm when the line is busy.

Can set Full-day Arm or partial time Arm mode according to needs.

Events record.

Power-off protection. The system will store your Settings. So you don't need to set it again after the power on;

Support Telephone Phonic Alarm.

Excellent choice for school, factory, warehouse etc.