The closest peer in the Omron portfolio is the S8VS-48024, a 480 W unit with screw terminals and alarm output. The S8VK-G12024-400 is a lighter, lower-power sibling — 120 W versus 480 W — and uses a different terminal block form (not screw). It will not drop into a panel wired for the S8VS-48024 without rewiring the input/output connections and verifying the load budget. For a 120 W 24 VDC requirement, the S8VK-G12024-400 is the correct fit; the S8VS-48024 is oversized and physically larger.
The conformal coating option is a factory-applied protective layer on the internal PCB assembly. It does not change the electrical ratings — still 120 W, 24 VDC — but adds resistance to condensation and airborne contaminants. This is specified at order time; the standard S8VK-G12024 (without coating) is a different order code. Verify the option code on the nameplate matches the PO when the unit arrives.