Geofire Doormouse 230V Electromagnetic Fire Door Holder (200N) (3-87-0371)
| Stock available | Qty | Delivery |
|---|---|---|
| Poole | 1 | Same day dispatch |
| UK Hub | 0 | None at UK Hub |
- 200N holding force
- Zero residual holding force when de-energised, thanks to a spring-loaded pin
- Integral manual release button
- White fire-resistant ABS casing, surface mounted, with knockouts for surface or rear cable entry
- Internal diodes dissipate back EMF on switch-off, reducing wear at the control unit
- EMC filter fitted
Frequently bought together





Product details
The Geofire Doormouse 3-87-0371 is a 230V electromagnetic fire door holder that legally holds fire doors open and releases them when the fire alarm operates.
The Geofire Doormouse 230V AC electromagnetic fire door holder (3-87-0371) is a hard-wired, wall-mounted device that legally holds open fire doors where easy access is essential. It connects to a suitable fire alarm system: when an alarm is triggered, power to the holder is cut and the door closes under its own closer. An integral manual release button allows the door to be closed without operating the fire alarm. It is ideal for public areas such as hospitals, offices, hotels and nursing homes.
Key features
- 200N holding force
- Zero residual holding force when de-energised, thanks to a spring-loaded pin
- Integral manual release button
- White fire-resistant ABS casing, surface mounted, with knockouts for surface or rear cable entry
- Internal diodes dissipate back EMF on switch-off, reducing wear at the control unit
- EMC filter fitted
- Type tested to EN 1155 and CE marked under the Construction Products Regulation
- 12 month manufacturer's warranty
Technical specifications
- Part number: 3-87-0371
- Supply voltage: 230V AC
- Current: 10mA
- Holding force: 200N
- Residual force: Zero
- Ambient temperature: 0 to 40°C
- Ingress protection: IP51
- Casing: White fire-resistant ABS
What's in the box
- Doormouse door holder
- Adjustable keeper plate
- Fitting instructions
Used for: holding open fire doors in corridors and public areas of hospitals, offices, hotels, care homes and schools.
Frequently asked questions
How does the Doormouse release the door?
It connects to a suitable fire alarm system. When an alarm is triggered, power to the holder is cut and the door closes under its own door closer.
Can the door be closed without the fire alarm?
Yes, an integral manual release button allows the door to be closed without operating the fire alarm.
What supply does it need?
This model is 230V AC, drawing 10mA, with a 200N holding force and zero residual force when de-energised.


