Solid-state Model G3TC, used as interface between logic circuitry and load, has built-in hold down screw which fastens relay to board to eliminate loosening by vibration. AC input module has operating voltage range of 90-140 Vac/dc and 180-280 Vac/dc; dc input module has range of 10-32 Vac/dc. Logic level output supply voltage is 5-24 Vdc on both modules. AC output module has rated input voltage of 5-24 Vdc and applicable load of 3 A at 75-280 Vac. DC output module''s applicable output load is 3 A at 5-60 Vdc and 1 A at 5-200 Vdc.