The Viessmann 7511618 Vitotrol 100 Opentherm Wired Programmable Room Thermostat is a white, 2 wire thermostat designed for central heating radiators. It features a push button and digital control style, with a 3.25 inch display size. The thermostat is programmable for 7 days with 4 periods per day, and it has features such as battery backup, adjustable thermostat, and frost protection. With a manufacturer warranty of 1 year, this unit is a reliable choice for controlling the temperature in your home.
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