... control Wireless doorbell & siren GSM home door monitoring system Product Introduction: SIMPAL-B3 GSM Alarm System is one of the best home alarm ... sensors (8 sensor Zones), such as door magnet, PIR sensor, smoke sensor, gas sensor etc. The SimPal-B3 can report alarm ... to alarm. It can work with door sensor, PIR detector, Smoke detector etc.l SMS Remote control: User can send SMS ...