Residential Electric Door and Gate Operators Commercial-Industrial Trolley type-ceilling, Wall Mounts, B1-Parting, Sliding Doors Electric Operators Waterproof Trolley Type-Ceillling and Jack-Shaft-Wall Mount Explosion-proof Trolley Type-Ceillling and Jack-Shaft-Wall Mount Sliding Gate Electric Operators Swing Gate Electric Operators Trafic control barriers To control of vehicular traffic in private and public parking areas. Rolling &Fire Doors Rolling Service Doors & Fire Doors. Jack Shaft - Wall Mount Accessories Different accessories for your needs Safety Devices Reverse Systems and Sensor Entry-Exit Devices Loop Detectors, Card Reader and more Operating Controls   Modifications   Special applications   Electric Overhead Door Lock This locking system is designed to be used with a small size overhead type door, standard lift, high lift or vertical lift, preventing opening of door from the exterior by lifting the dead weight of door. A striking bar is mounted at the top section of door, and the stationary locking housing is bolted next to door track on the wall. When opening devices are used, door operator is energized and a solenoid activated lever simultaneously moves away from the striking bar, permitting door to open. Cable-release is provided for manual operation in the event of power failure. Operating voltage available: 120V, 208/230V, 460V, 550V. Part No. 50340 120V Part No. 50341 208/230V Part No. 50342 460V Part No. 50343 550V