What the buyer is actually specifying
The ABB S200-OW8 weighs 0.04 kgs, matching the small DIN-rail handling class shared across the S200 expansion family.
Where the S200 output class lands
PLC output modules in this class carry discrete switching channels — relays or transistors — out to field actuators and are addressed through the host PLC's I/O map; for the S200 family that map is built inside ABB's Control Builder or the legacy Advant engineering tool, whichever the rest of the rack is running. The ABB S200-OW8 weighs in identically to the S200-class expansion peers at 0.04 kgs, so it slots into the same panel cut-out and shares the same wiring approach as the rest of the rack; specifying it as a spare or expansion on an existing ABB S200 PLC line is a like-for-like call rather than a redesign.
Cross-shop against the same-family peers
EI803F sits in the same PLC Expansion Modules category but at 0.06 kgs, a mass delta too small to drive a procurement call on its own; the meaningful cross-shop question for a buyer is whether the channel count, voltage class, and host PLC compatibility match, not the grams.