Horstmann C-Stat Programmable Room Thermostat is widely recognised as one of the best ways in which to control central heating. This C-Stat programmable room thermostat have a large display and intuitive user interface, making them easy to set up and use. Uses a sophisticated time proportional integral (TPI) algorithm for accurate temperature control and energy efficiency.- Large display and intuitive user interface- Sophisticated time proportional integral (TPI) algorithm- Mains powered- A temporary temperature change can be made at any time- Voltage-free contacts- Up to 6 target temperature settings Per-day