Dorgard is a wireless fire door retainer that holds open fire doors, allowing them to automatically close on the sound of the fire alarm. Installed onto the bottom of the fire door in under five minutes, Dorgard is listening for a continuous fire alarm of 14 seconds or more. This wireless device holds open doors, but allows them to automatically close on the sound of a fire alarm. Dorgard can be installed onto the bottom of a fire door in less than five minutes - because it's battery-powered, there's no need for a hard-wired connection. The fire door retainer is always listening for a continuous fire alarm of 14 seconds or more. Keep fire doors open legally and safely. Allows door to close when fire alarm sounds. Sound-activated - Dorgard listens for a continuous fire alarm. Easy to fit - installation takes less than 5 minutes. Wireless - no hard-wired connection required. Versatile - can be retro-fitted to existing fire doors. Suitable for a maximum door weight of 160kg. Can hold open doors up to 1600mm in width. Automatic night-time release facility. Compliant with fire safety standards; automatically releases during alarms. Enhances accessibility for wheelchair users, meeting Equalities Act 2010 standards.