... alarm system is widely used for security protecting, data surveying and remote monitoring in families, shops, villas, financial offices, residential ... Home Arm, Remote ArmSOS, fire, gas, door, hall, window, balcony, and boundary places alarmReal-time, delay, 24 hours, bypass defense zones ... rechargeable battery: make alarm when power offComply with CCC safety standard and GB12663-2001 national stand