D-GJ Gear Reduced Jackshaft Operator
D-GJ Gear Reduced Jackshaft Operator for Rolling Service Doors, Rolling Grilles, and Counter Shutters. Features a battery backup, worm gear reduction, solid state circuitry with feedback LEDs, on board open/close/stop buttons for service and adjustments, field adjustable built-in functions, auto-detect monitored photobeam, floor level disconnect.