Easy to use programmable thermostat providing different temperatures at different times of the day, ideal for combi boiler installations. TheTP4000 programmable room thermostat combines the functions of a timeswitch and room thermostat into an easy to use unit, which provides up to six time and temperature events per day. This flexibility allows the operation of the heating system to be matched to the lifestyle of the user, providing different temperatures at different times of the day. The TP4000 is a 24 hour room thermostat, where the demand is for the same programme each day. Temporary adjustments can be made to control temperature but the override is cancelled at the beginning of the next event. It also has an easy to use ‘frost protection’ setting feature. The TP4000 is designed with modern times in mind and has the same functionality as the well known predecessor TP4.