GSM REMOTE CONTROL SWITCH
Remote control using a cell phone from anywhere in the world!

The GSM-AUTO is a GSM remote control switch, it connects to the cell phone network and like a cell phone has its own cell phone number. The GSM-AUTO is activated by calling its cell phone number, it will recognise an authorised telephone number calling it, reject the call without answering and switch on or off the device connected to it, because it rejects the call without answering there are no call costs incurred.

It has 2 independent relay switches with normally open and normally closed switch contacts, these can be programmed to switch on for a pre-determined length of time whenever the GSM-AUTO is called.

The relay switches can also be temporarily or permanently switched on or off by sending the GSM-AUTO a sms text message command. It can report the relay status by sending back a text message.

WATCH THE GSM REMOTE CONTROL DEMONSTRATION VIDEO BELOW

• Quad band GSM-850, GSM-900, GSM-1800, GSM-1900 MHz so will work anywhere in the world where there is a GSM cell phone network

• Two independent relays that can be programmed to switch on for a period of time between 1 second and 18 hours when the unit is called. Two access modes are available, open access where the GSM-AUTO will respond to any incoming call, and secure access where it will only respond to programmed authorized telephone numbers.

• Up to 500 authorized user telephone numbers can be added to the white list, when the secure access mode is activated only the numbers in the white list are able to activate the GSM-AUTO. Authorized numbers can be added and deleted as required by sending the unit sms text commands.

• The relays can be permanently switched on or off by sending the GSM-AUTO a text message command, a confirmation text can be returned if required.

• The relays can be temporarily switched on for a period of time between 1 second and 18 hours by sending the GSM-AUTO a text message command, a confirmation text can be returned when the relays turn on and off if required.

• Two relay's with normally open (N.O) and normally closed (N.C) contacts, maximum switching capacity is 10 amps @ 230V ac per relay.
  
  

NOTE: You will need a SIM card, the GSM-AUTO is not locked to any cell phone network so it can be used with any GSM network provider. You can purchase SIM cards here SIM cards
Some US network providers are now locking sim cards to the phone they were purchased with, this means the sim card will not work with any other device. Call your network provider and ask them to unlock the sim card, they will ask for the IMEI number of the device you wish to use the sim card with, this can be found on a white label just above the antenna connection. From the feedback we have received it seems that AT&T are helpful whereas simple mobile, trak-phone and Verizon are not. 
You will also need a 12 volt DC power supply with a current rating of 500mA (0.5 Amp), a suitable US power supply can be found above.

DOWNLOAD

For further information you can download the GSM-AUTO instructions below (PDF format)

GSM-AUTO INSTRUCTIONS DOWNLOAD

GSM-AUTO ON THE INTERNET

Remote Car Starter Project also useful info about pre-paid USA SIM cards

Aircraft pre-heater remote control control system

Remote Control for Airplane Preheater