The GSM-AUTO is a wireless gsm remote control switch that connects to the GSM cell phone network. It is activated by calling its cell phone number, it will reject the call without answering and switch on the device connected to it.
There are no call costs incurred when dialling the unit, it will recognise an authorised telephone number calling it and reject the call without answering.
It has 2 independent switches, these can be programmed to switch on for a pre-determined length of time whenever the GSM-AUTO is called, alternatively the switches can be permanently switched on or off by sending the GSM-AUTO a sms text message.