GSM control module ALTOX GSM-4 GPS is designed to control autonomous car heaters using analogous signal. GSM control module ALTOX GSM-4 GPS allows controlling autonomous heaters using a mobile phone (setting up a voice call from the phone number saved in the device and pressing the corresponding button on the mobile phone or sending a text message (SMS) and the additional button installed in the car’s interior. An option was added to switch off the voice menu (all incoming calls are dropped) which allows saving balance on the SIM card. GSM control module ALTOX GSM-4 GPS can also be controlled via mobile Internet-application ALTOX HEATER or via other mobile apps HeaterRC and Thermo Call (SMS instructions, START, STOP, etc.). Device version ALTOX GSM-4 GPS equipped with a GPS-GLONASS integrated module that allows you to control the car’s location via SMS, mobile Internet-application ALTOX HEATER and by ALTOX SERVER 2.0 monitoring system in real time (setting TRACKING1).