DRX – EN1155 Approved Fire Door Holder
Electromagnetic fire door retainers allow fire doors to be legally held open.
The DRX range is ideal for applications where maximum protection is needed against vandalism or accidental damage. Floor mounting also allows install when the fire door is not near a wall.
When connected into a fire alarm system, power to the electromagnet is removed when the alarm is active; closing the fire door via it’s standard mechanism.
Specification & Part Numbers
Holding Force (N)
Temp. Range (°C)
0 to +40
0 to +40
All door retainers are supplied as standard with the flexible keeper plate. However, for applications where the door does not reach the wall, the chain keeper comes with 1 metre of chain to facilitate a wider range of mounting options.
All door retainers are supplied as standard with the flexible keeper plate. However, for narrow corridors, the low profile keeper plate can allow the door to sit closer to the wall.
All door retainers are supplied as standard with the flexible keeper plate. If spares or replacements are required, they are available separately.
Transformer Rectifier Power Supply For 24VDC Door Retainers
Cranford offer a 2 Amp and 4 Amp power supply unit to assist with the installation of 24VDC door retainers.
The units contain an internal relay allowing fire doors to be closed upon actuation of an external contact or supply of 24VDC.
Additional 12VDC and 24VDC power supplies are available upon request.