Very easy operation combined with great versatility and low cost were the design targets with this thermostat. Both day and night temperature may be set by means of easy-to-use rotary knobs. Switch-over time from day to night is repeated automatically every day once programmed. Manual switch-over from day to night temperature is also possible by means of a push button. A one hour sleep function is also available, which may be of interest in the bathroom or other rooms which are only used occasionally. The thermostat also has an alarm output for when the temperature drops below 5°C (41°F). It comes complete with aluminium housing.