... 1900Mhz Port:4I/2O/USB Ports home Alarm,wireless home alarm,home alarm system.GSM SMS Controller-Alarm ( 4I/2O/USB Ports) Remote ... room application;18. Automation System, M2M;19. GSM Access Control System, GSM Gate Opener, etc.Mainly Features of the GSM SMS Controller-Alarm ... Level Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas ...