... outputs(12V-24V); 4 Alarm logic inputs New Program Software Released!More Easier,More Professional,More Reliable!The GSM Controller ... providing power cut off alarm (optional)>>Configuration by PC software via RS232 COM port.>>Based on GSM Quad-Band ... SMS Controller, GSM Home Automation system, Industrial Remote Controller, GPRS RTU Data Logger, GSM Telemetry, Temperature Measurement Logger, Power ...