... :Model 509 Programmable Heating Thermostat509 series, large LCD digital thermostat, 110/220VAC±10%,16A thermostat for hot water radiant heating systems ... programmable time settings, Monday to SundaysLarge Back-lit display, LCD Screen, easy-to-see and readInfrared remote-controlled function( ... range:0 °C- 40°Cl Sensor type: NTCl Color: white ivoryl Relative humidity:<85%(23°C)l Dimensions:120mm×90mm ...