What it is and why the 8 outputs matter
Omron's NX-TC3407 is an active-production NX-series slice that handles 4 analog temperature inputs and drives 8 voltage (external SSR) outputs. That's twice the control channels of the 4-output NX-TC3405 or NX-TC3406 — meaning one module can manage four dual-loop zones or eight single-loop heaters without a second slice.
Compliance docs cover multiple markets
Approved under CSA, cUL, cULus, KC, NK, and UL. That clears it for North American panels, South Korean installations, and Norwegian maritime (NK). No extra certification step needed for those regions — just match the nameplate to the PO.