The FR-U10020DSU is a fire-rated monitored standard magnetic lock for compatible fire doors. It provides separate lock status and door status outputs for compatible access control systems and door entry and intercom systems .
The lock provides up to 1200lbs (544kg) of holding force and operates on selectable 12VDC or 24VDC . It has an aluminium housing and an electroless nickel-plated steel armature plate. Its fail-safe design requires power to remain locked and releases when power to the lock is removed.
The lock status output indicates whether the magnet and armature plate are engaged. The separate door status output reports whether the door is open or closed. A built-in lock status LED provides a visual indication at the lock.
The FR-U10020DSU has been fire tested to BS EN 1634-1 and is suitable for compatible FD30 and FD60 fire doors when installed in an arrangement covered by the relevant fire test evidence.
Available Models
- FR-U10020DSU – Fire-rated monitored standard magnetic lock with a lock status LED and separate door status output.
Key Features
- Up to 1200lbs (544kg) holding force
- Selectable 12VDC or 24VDC operation
- Fail-safe operation (power to lock)
- Separate lock status and door status outputs
- LED lock status indication
- Aluminium housing
- Electroless nickel-plated steel armature plate
- Fire tested to BS EN 1634-1
- Suitable for compatible FD30 and FD60 fire doors
Typical Applications
- Access-controlled FD30 and FD60 fire doors
- Office entrances and staff access doors
- Schools and educational facilities
- Healthcare and public buildings
- Internal security doors and restricted areas
- Installations requiring feedback on lock engagement and door position
Compatibility and Accessories
The FR-U10020DSU can be used with compatible access control and door security equipment in new installations and retrofit projects. The controller or monitoring system needs suitable inputs to receive both status signals.
Before ordering, check the supply voltage, current draw, mounting arrangement and emergency release requirements. For fire doors, check that the door construction, fixings and accessories are covered by the relevant fire test evidence.
- Access control systems
- Door entry systems and intercoms
- Proximity card readers
- Keypad entry systems
- Press to exit buttons
- Emergency door release units
- Access control power supplies
- Relays and timers
- Compatible lock and door monitoring systems
Technical Specification
- Model — FR-U10020DSU
- Lock type — Fire-rated monitored standard magnetic lock (maglock)
- Operation — Fail-safe (power to lock)
- Operating voltage — Selectable 12VDC or 24VDC
- Holding force — Up to 1200lbs (544kg)
- Lock monitoring — Monitored, with lock status output
- Door status output — Yes, for door open or closed feedback
- Lock status LED — Green when unlocked, red when locked
- Housing material — Aluminium
- Armature plate — Electroless nickel-plated steel
- Fire testing — BS EN 1634-1
- Suitable door types — Compatible FD30 and FD60 fire doors
- Dimensions — 67mm × 268mm × 40mm (H × W × D)
FR-U10020DSU Product Information
The FR-U10020DSU combines up to 1200lbs (544kg) of holding force with separate feedback on lock engagement and door position. It suits compatible fire door installations where the access control system needs both signals and staff need a visual indication of lock status at the door.
Frequently Asked Questions
What does DSU mean?
DSU identifies the door status monitoring version. Its door status output allows compatible equipment to report whether the door is physically open or closed.
What is the difference between lock status and door status monitoring?
Lock status monitoring indicates whether the magnet and armature plate are engaged. Door status monitoring indicates whether the door is open or closed. The FR-U10020DSU provides separate outputs for these two signals.
What is the difference between the FR-U10020 and FR-U10020DSU?
Both models provide lock status monitoring and LED lock status indication . The FR-U10020DSU adds a separate door status output for compatible systems that need door open or closed feedback.
What does the lock status LED show?
The LED shows green when unlocked and red when locked .
What is the holding force of the FR-U10020DSU?
The FR-U10020DSU provides up to 1200lbs (544kg) of holding force.
Is the FR-U10020DSU suitable for fire doors?
Yes. It has been tested to BS EN 1634-1 and is suitable for compatible FD30 and FD60 fire doors when fitted in an arrangement covered by the relevant fire test evidence.
What does fail-safe operation mean?
The lock requires power to remain locked. It releases when power to the lock is interrupted.
What voltage does the FR-U10020DSU operate on?
The lock can be set to operate on 12VDC or 24VDC to match the installation’s power supply.
Can the FR-U10020DSU be used with access control systems?
Yes. It can be used with compatible access control and door entry systems, including installations that use card readers, keypads, press to exit buttons and emergency door release units. To receive both monitoring signals, the connected equipment needs suitable inputs for lock status and door status.