ABB temperature monitoring relays of CM-TCS and C51x range are able to measure temperatures of solids, liquids and gaseous media using different types of sensors. Overtemperature and undertemperature monitoring as well as open- or closed-circuit principle is configurable for all devices. As soon as the temperature falls below or exceeds the set threshold value the output relays change their positions according to the configured functionality and the front-face LED‘s display the current status. Main benefits include Down-time and commissioning time reduced; Engineering time savings & Selection time reduction. Main features include Different types of sensors e.g. PT100; Different monitoring functions (over-/undertemperature, window monitoring); All configurations and adjustments by front-face operating elements; One or two threshold values; Open- or closed-circuit principle configurable & Short-circuit monitoring and interrupted wire detection.