... 4: Voice prompt Model No.: L&L-819B Description: LCD Display GSM Alarm System for Home Security The GSM wireless SMS ... telephone; 9. Arm, disarm, monitor, and intercom by phone; 10. Real-time, Delay, 24 hours, Bypass defense zones program; 11 ... accept unlimited wireless sensors including door, PIR sensor, vibration sensors, smoke sensor, gas sensor, water sensor etc. 3. Does can work in my ...