Siemens Temperature Monitoring Relay with SPDT Contacts, 110/230 V ac. Temperature Sensitivity: Undertemperature. Temperature Sensing Range: -50 → +50°C. Maximum Temperature Sensed: +50°C. Minimum Temperature Sensed: -50°C. Minimum Operating Temperature: -25°C. Width: 22.5mm. CAD Drawing: 3D CAD Model. Operating Temperature Range: -25 → +60 °C. Maximum Operating Temperature: +60°C. Height: 92mm. Dimensions: 91 x 22.5 x 92 mm. Length: 91mm. MPN: 3RS1010-1CK00