Versatility allows the XPBB fire door release device to operate on 120VAC, 24VAC, or 24VDC power sources. Internal Battery Backup allows the release device to stand alone from the fire alarm system and act independently in the event of a power outage. The system can provide 24VDC power for up to four smoke detectors and two horn/strobes, mounted on either side of the door. Programmable delay settings, close door detection, diagnostic LEDs, localized testing, and reset capabilities are also standard.
