The Siemens 6ED1055-1CB00-0BA0 is a LOGO! DM8 24 expansion module designed to extend the I/O capabilities of LOGO! logic controllers. It provides 4 digital inputs and 4 digital outputs with 24V DC operation, supporting a current rating of 0.3A per output. This compact module features transistor outputs for fast switching applications and is easily mounted on standard 35mm DIN rails, making it ideal for space-constrained industrial control panels in automation systems.