Material This underfloor heating thermostat control switch is made of durable materials and ensuring long-lasting performance. Dual Sensor Probes - Designed specifically for floor sensors and other electric heating elements, this thermostat uses internal and external sensor probes for accurate temperature measurement. AUTOMATIC SAFETY SWITCH - Equipped with an automatic safety switch, this thermostat controls the on/off output of the heating equipment, ensuring safe operation. LED INDICATOR - To provide safety, energy efficiency and convenience, the LED indicator lights up when the heater is turned on. EASY TO OPERATE - With a manual switch and knob, this thermostat is easily operated and mounts to wall surfaces. No need to worry about programming.