1. GSM Frequency: Dual-Band(900/1800MHz), Quad-Band is optional(850/900/1800/1900Mhz) ; 2. GSM SMS Alarm: SMS and phone call; back up power supply; 3. Memory system avoid reset up when main power is off. The system is equipped with external powe... - Update: 2011-01-03

Name:Intelligent Auto Dial Emergncy Aid for elderly/Chirdren/Sick/Disabled Alarm System Model:WL-1002 Instruction: 1. Very suitable for the elderly, children, the sick, the disabled emergency help. 2. With 8 wireless and 8 wired defense zone, e... - Update: 2010-10-12