... . Wellheads, boat, vehicle;13. Energy saving, street lights control system;14. Valve controls;15. Transformer stations; 16. Unmanned machine ... 18. Automation System, M2M;19. GSM Access Control System, GSM Gate Opener, etc. Mainly Features of the GSM SMS Controller-Alarm : 1 ... Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR Motion Sensor, Smoke Sensor, Gas Leak Sensor, Glass Break Sensor, ...