Improve the efficiency of your central heating system with the EPH Controls A17 Single Channel Central Heating Programmer Timeswitch. This programmable thermostat is compatible with various brands and models of central heating boilers, and offers a digital control style with a rectangular shape. The device is made of durable plastic material in a white colour, and can be wall-mounted for easy installation. The EPH Controls A17 Single Channel Central Heating Programmer Timeswitch has a voltage of 230V and a line voltage type. It features a boost function that fits industry standard backplate, and offers programmability with 3 periods per day. The device also has a system switching of 3(1)A 230Vac, and a manufacturer warranty of 2 years. Upgrade your heating system with this reliable and efficient programmable thermostat.