Emergency Door Release (Green) device is used in access-control, fire-safety, or secure-door systems to enable manual unlocking of doors (especially electrically locked doors) in urgent or evacuation scenarios.
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- Allowing fast egress from a secured area when someon needs to exit immediately
- Providing a manual override for fail-safe locking systems, where power cut or override is needed to release the door
- Being clearly distinguishable (green colour) to signify ''safe-exit / release'' rather than fire-alarm (which often uses red)
- Often installed at exit doors, emergency exits, man-trap vestibules, or secure rooms where rapid release must be available
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