The Schneider TM5SDO4R is a 4-channel relay output module for the Modicon TM5 remote I/O system. Each output switches up to 5 A at 230 V AC (184-276 V) or 30 V DC (24-36 V), with a maximum common current of 10 A per output group. It is an active, in-production part — no last-time-buy concern here.
The module occupies a 12.5 mm (0.5 in) slot on the DIN rail — that's a single-width module, so it won't eat up backplane capacity in a dense I/O rack. Depth is 75 mm (3.0 in), a standard TM5 footprint that leaves clearance for wiring ducts in an 80 mm deep cabinet. Connections are plug-in spring-cage terminals (sold separately); the module itself stays on the rail when you pop the connector off. IP20, Pollution Degree 2, rated for ambient operation 14-131 °F without derating (horizontal mount).
