The Siemens 3RS1000-2CD00 is a temperature monitoring relay designed for PT100 sensors, providing reliable measurement within a temperature range of -50 °C to 50 °C. This compact relay, with a width of 22.5 mm, operates on 24 V AC/DC and features one normally open (NO) and one normally closed (NC) contact. It uses a quiescent current principle and includes spring-loaded terminals for secure and efficient wiring. While this model has been phased out, it has historically been valued for precise temperature oversight in various industrial applications. Products like this one are available through BSP Automation, offering solutions tailored to your automation needs.