Allen-Bradley 1771-0W16 Electromechanical Contact Output Module

The Allen-Bradley 1771-OW16 Electromechanical Relay Output Module is a 16-point digital output module for the PLC-5 family that switches external circuits through electromechanical relay contacts. It mounts in a PLC-5 I/O rack and connects to the controller via the standard backplane I/O bus, providing isolated, discrete contacts for each output channel. Each of the 16 outputs acts as a relay contact, enabling direct control of actuators such as solenoids, valves, relays, and similar loads through ladder logic or other PLC-5 programming. Because it uses mechanical contacts rather than solid-state switching, the module offers relay-style isolation and switching behavior suited to mixed loads and environments where relays are preferred.