16-ch Power Relay Output Terminal Accepts 20-pin or 50-pin (Opto-22 compatible) connectors. 16 single-pole single-throw (SPST) relays. High-power relay handles up to 5 A @ 250 VAC. Onboard varistors protect all relay contact points. Industrial screw terminals for ease of wiring. LED status indicators. +5 V/+12 V power/status LED indicator.