... activation.) This can be used for parking latch control, gsm gate opener, remote control machine, etc. An automation system. Each input ... is very useful to Fuel tank monitoring, Oxygen in hospital, Flood level, street light control, wellhead control, BTS environment monitoring, power ... and Automation System, M2M;19. GSM Access Control System, GSM Gate Opener, etc. GSM/GPRS Remote Controller,gsm remote ...