The GSM socket has a climate control function and completely replaces the thermostat + makes it possible to control heaters from a distance! GSM socket (SMS socket) is an intelligent device with a GSM module that allows you to remotely turn on and off heaters from your mobile phone using simple SMS commands or a voice call. You can also control the automatic heating system depending on the temperature and according to the schedule. It is one of the components of a popular smart home in recent years.