The Schneider Electric TM5SDI6D is a 6-channel, 24 V DC digital (discrete) input module designed for the Modicon TM5 modular I/O system. It serves as a high-performance interface for connecting various field devices such as pushbuttons, limit switches, proximity sensors (PNP), and other 2-wire or 3-wire 24 V DC sensors to a Modicon TM5 controller (e.g., M251, M262).