Wireless thermostat, battery operated, for wall mounting, sends to receiver Instat 868-a... Suitable for controlling central heating, warm water floor heating, warm air heating, night storage heating, etc. Very simple operation via analogue temperature setting. Range restriction in the setting button to reduce heating costs. Temperature reduction (by radio) via the clock thermostat INSTAT + 868. Two selectable control methods, therefore suitable for almost all types of heating. Can be used for heating or cooling (2-pipe systems). With operating mode switch day/night/automatic and an indicator lamp for learning mode and battery change