... , disarm and 24-hour arm independently.5. SMS of each zone(5 wired zones,16 wireless zones)can be edited independently ... Specification: Standby Current: 80mA Working Current: 300mA Power Supply: DC 9-12 VOperating Temperate: -10°C ~ +40°C GSM Frequency: 900 ... lamp,billboard,farm,orchard,fishpond, parking lot. Business/Home GSM alarm system is widely used in the security devices, data surveillance and ...