Lockwood FD480 Electromechanical Hold-Open Device for Single Doors The FD480 is suitable for applications where fire doors are constantly kept open. Applications for the FD480 include hotels, office buildings and fire doors where hold open function is needed. The maximum door width is 1400 mm. Fire door is held open by the FD480 at the selected angle. When power is switched off, e.g. when smoke detectors react to smoke, the door closes. The hold open angle for the door can be adjusted from 70° to 120°. Hold-open device has adjustable hold-open function. Current consumption 60 mA (24 VDC). Major Features of the FD480 DesignCompact modern design to suit both single and double door installations. Fire RatedThe Lockwood FD480 Concealed Door Control Systems has been successfully fire tested up to 2 hours on fire door assemblies in accordance with Australian Standard AS1905.1:2005 - Part 1: Fire Resistant Doorsets. Flexibility In InstallationOne unit suits both push side or pull side Door Sizes Single door applications minimum 350mm, maximum 1100mm Minimum door thickness 40mm Hold-Open Device Easy to install with adjustable angles (70° to 120°) Hold-open strength can be adjusted during the installation Opening AnglesMaximum opening angle 120° Power SizeAdjustable EN 1 - 4 Electrical Specifications24VDV ± 15%. Low consumption:max current 60mA per hold-open device Downloads Lockwood Fire Door Closing Systems Catalogue.pdf (.pdf, 1.2 MB) Close Part numbers Trade Pack Description Part Number Silver FD480 Close Where to buy? Find your local Lockwood stockist. Lockwood FD481 Mechanical CoordinatorDouble doors. Lockwood 2616EMC Electromechanical Hold-Open DeviceHold-Open Device Single Doors. Lockwood 2616EMCD Electromechanical Hold-Open DeviceDouble doors.