LCD GSM Security Alarm System 1.Two-way communication 2.SMS arm/ ... sensors 4.CE/ROHS certification Wireless zones LCD GSM Security System(LS-GSM-101) 8 wireless defence zones,each ... Stay), Disarmed, SOS are available;4) Armed delay, alarm delay, siren work or not, more other functions are ... status and GSM Signal status.7) Auto-detect and report, GSM Signal Jammer alarm, SMS Switch is available.8) User ...