Representative product-family image. The exact configuration may differ.
SDC
SDC EH301224A Electromagnetic Door Holder
Surface-mounted magnetic holder that keeps a door open while powered and releases it for the door closer when power is removed.
- Model / SKU
- EH301224A
- Category
- Doors, Gates & Shading
- Product type
- Electromagnetic door holder
- Role
- Actuator / load
Control & power
- Control type
- Switched power
- Power supply
- 12/24 VAC or VDC (1224 configuration)
Use a rated relay in the approved release/control arrangement to interrupt holder power. On fire doors, the fire-alarm release must take precedence over automation commands.
A suitable smart controller can expose supported functions to Matter. The control type alone does not confirm electrical compatibility or actual position feedback.
Technical specifications
- Mounting
- Surface-mounted, single coilSource ↗
- Current, DC
- 40 mA at 12 or 24 VDC, standard configurationSource ↗
- Holding force
- 30 lb in the standard 1224 configurationSource ↗
- Release behavior
- Releases on loss of power; door closure relies on a separate closerSource ↗
- Finish
- Chrome powder coat; zinc-alloy housingSource ↗
Selection & installation notes
- A hold-open device, not a door-locking magnet or a powered door operator.
- Use the specified fire-door holder/closer and fire-alarm arrangement where applicable. The EH family also includes other mounting and voltage variants.
Sources & documentation (2)
- SDC EH manufacturer product page ↗Reviewed Nov 5, 2026
- SDC EH manufacturer specification and ordering sheet ↗Reviewed Nov 5, 2026