The 2900306 is a PLC-INTERFACE relay module consisting of a basic terminal block and a plug-in miniature relay. It operates with a nominal input voltage of 24 V DC and features a 1 PDT contact with a multi-layer gold plating, making it suitable for reliable switching. The module utilizes push-in connection technology for efficient wiring and has a slim 6.2 mm width, an integrated input circuit with polarity protection, and a freewheeling diode. Designed for a wide operating temperature range of -40 °C to 60 °C, it ensures safe isolation between the coil and contact according to DIN EN 50178. Its compact design is ideal for control systems and automation panels where space and reliable signal switching are critical.