... Fire Systems and Alarms with Black and White 2) GSM Touch Keypad 3) 10-second voice 4) 100 detectors 5) CE certified ... , fire, gas, door, hall, window, balcony, and boundary places alarm; 12. Real-time, delay, 24 hours, bypass defense zones programming ... ;18. Built-in LI battery: automatically recharge. gsm smoke Alarm SystemTechnical Parameters:Power: 9V-12V DCReceiving code: ASKReceiving frequency: ...