Firefly® & Firefly® BB Release Device

A Fusible Link Closing System can be ordered with a fail-safe release device that responds to alarm signals and permits the fire door to close prior to smoke migration or the high temperatures required to melt the fusible link.  This option is suitable for applications that can offer more wall space for the installation of the device and where aesthetics are less important. We offer two comprehensive options that can accommodate multiple voltages - Firefly and Firefly BB. The Firefly BB comes standard with a battery back-up.