Description of the GSM Preheater Switch

How it Works :

The switch uses cell phone sms (text messaging) service to turn on and off the GSM-15. The great thing about this switch is you use your smart or I-phone with the switch app to turn your plane's heater on before you head out to the airport. When you turn on the heater on or off you receive a text message that the text was received and the switch is either on or off.

Click here to see a video of how it works.