... L-819B Description: LCD Display GSM Alarm System for Home Security The GSM wireless SMS alarm product has large LCD screen with English menu navigation ... settings can be finished by keypad; 12. Sos,Fire,Gas,Door,Hall,Window,Ballcony and Perimeter places Alarm13. Real-time ... sensors including door, PIR sensor, vibration sensors, smoke sensor, gas sensor, water sensor etc. 3. Does can work in my ...