Specialty Door Service, Inc. - Commercial Operators

Durable, reliable PowerHoist BASIC belt drive operators are ideal for operating sectional or rolling steel doors up to 14 feet high in light duty applications.

All PowerHoist BASIC Jackshaft and Trolley Operators feature:

Rugged construction. Heavy-duty NEMA-1 steel enclosure protects electrical components.
Quiet operation. Reinforced enclosure provides noise reduction.
Protection against obstructions. Adjustable friction clutch and run timer help protect the door and operator if door movement is obstructed.
Quick stopping power. All Jackshaft models feature a powerful Sure-Lock electromagnetic brake for quick stops (optional on trolley model).
Timed-delay closing settings. Set your operator to automatically close the door from 0 to 255 seconds after a full open cycle.
Convenient radio control connections. External inputs make it simple to connect radio controls.
Light connection capability. A light source can be connected and activated from separate wall station or operator motion with on-board 5-minute delay.
Emergency disconnect. For manual operation, if necessary because of a power outage.