Temperature monitoring relay of the motor winding (max. 2x3 PTCs) for temperature sensors according to DIN 44081 and DIN 44082 with short-circuit monitoring of the PTC thermistor circuit, dynamic line break monitoring, 2-channel detection circuit. It can be read using smart phone app via NFC wireless communication function, 1x2 PDT dry contact outputs, closed circuit principle, manual reset, optional screw connection and plug-in connection.