The Special 304 key release (2.5 m) is an external emergency release device used with MFZ Ovitor industrial door operators.

• Allows manual disengagement of the operator from outside the building
• Used when:
  • There is no internal access
  • Power failure occurs
• Connected via a steel cable (2.5 m length) to the operator’s release mechanism

Commonly used with:

• STA / MDF / STAC operator series
• Industrial sectional or roller doors

These systems include emergency operation features (hand chain / crank / release) for safety and manual override.

Summary