The LiftMaster LM21XP High Performance Release Device in red offers a reliable fail-safe release mechanism designed for fire doors or shutters. It ensures the door's tension remains intact during alarm activation by detecting when the door is closed, enhancing safety. Compliant with UL 864 Revision 9 standards, it must be used with an alarm system featuring battery backup. This device integrates seamlessly with fire alarm panels, allowing manual fire doors to connect to your building's alarm system. Secure your premises with this dependable safety solution. Order now to upgrade your fire safety system!