VIESSMANN Vitotrol 100 Open Therm 7 Day (NOT RF) Programmable Thermostat 7511618
VITOTROL 100. • Simple Wiring To Open Therm Connections Of The Boiler. Features Load Compensation For Boiler Plus Compliance. • Large LCD (Liquid Crystal Display) Screen. • Ergonomic User Interface Featuring An 'OK-button.