... phone and telephone. This alarm system is widely used for security protecting, data surveying and remote monitoring in shops, villas, ... financial offices and departments of electricity, petroleum, coal, government, public security and other unattended positions.1. 4 wired and 12 wireless ... Real-time, Delay, 24 hours, Bypass defense zones program;9. Can connect high voice and flashing siren;10. Built-in ...