Universal electronic thermostat MTD3 for mounting on a flush-mounted box. ON/OFF or PWM/PI control. The set includes an external floor sensor ETF-144/99A. Possibility of cooperation with an additional air sensor NTC 12kΩ. Sensor configuration is set in the thermostat menu. Additional functions: sensor calibration, temperature setback, antifreeze, scale limiter, timer and selection of 4 built-in programs. Power regulator operating mode without sensors indicator light. Easy programming of the thermostat configuration parameters thanks to the legible, backlit screen. Error signalling. Power switch. Power supply 230V AC.