The safety temperature controller for the temperature control of heater windings, hotplates, ovens, infrared radiators and water baths. 7 mm high LED-digits for the actual temperature. Coding switch for the setpoint. For maximum safety: An irreversible safety contact with a second probe input. If the set threshold temperature is exceed or the probe is broken, the regulator switches off both poles. At the same time, optical and acoustic alarms are triggered on. The desired alarm threshold value can be selected via a potentiometer and this setting can be displayed by pressing a key on the digital display.