Floor heating thermostat&Digital thermostat&Underfloor heating thermostat AE-Y509floor heatingthermostat are mainly used in the control of electric heater or electric diffuser. Specifications Sensing Element:NTC sensor Frequency:50HZ Housing: Flame retarding PC Accuracy: ±1ºC Supply:220 VAC±10% Set-Point Range:5ºC-35ºC Switching current: 10A.