Phoenix Contact 1336523 The temperature monitoring relay is designed with a maximum of two 2x3 PTC thermistors for temperature sensors compliant with DIN 44081 and DIN 44082, featuring short-circuit detection for the PTC thermistor circuit and dynamic line break monitoring across two channels. Additionally, it includes a 2-channel detection circuit and can be accessed through a smartphone app using NFC wireless communication, accompanied by 1x2 PDT dry contact outputs, operating under a closed circuit principle with manual reset options and adaptable screw or plug-in connection possibilities.