Programmable DIP switch delay setting - either 10 20 30 or 60 seconds delay of door release to permit passage clearance
Inputs for normally open 2- or 4-wire detectors and 4-wire normally closed detectors
Trouble and alarm relays for communication with the fire alarm control panel if required
Audible trouble sounder to indicate when the release device is not operational
On board diagnostic LEDs for easy troubleshooting
Testing function allows routine fire door testing without requiring activation of the smoke detector
Includes an integrated Battery Backup Module that allows this fire door release device to stand alone from the fire alarm system and act independently in the event of a power outage
Die cast metal enclosure with BEST cylinder (construction core included)
OPEN/CLOSE spring return to center (OFF) key removable in center position only. Should only be used on operators wired for constant pressure to open and close (all LiftMaster industrial operators with type D control wiring).
Die cast metal enclosure with standard key cylinder
OPEN/CLOSE spring return to center (OFF) key removable in center position only. Should only be used on operators wired for constant pressure to open and close (all LiftMaster industrial operators with type D control wiring).