Manual override knob provides an added level of safety allowing control with or without power and offering LOCKED OFF capability for servicing - LED output to remotely indicate switch state - requires optional LED - 3/8-16 tin-plated copper studs for maximum conductivity and corrosion resistance - 7/8 (22 mm) stud length accepts multiple cable terminals - Label recesses for circuit identification - Silver alloy contacts provide high reliability for switching live loads