RSG DH24120SPC is a surface-mount electromagnetic fire door holder from the RSG Security DH Series, model 24120, with a powder-coated chrome finish. It holds a self-closing door open until power is removed, and accepts either 24 V or 120 V input on terminal block connections. The housing is durable die-cast metal.
The 24120 model draws only 20 mA at 24 VDC, which RSG notes lowers overall job costs on large installations. The DH Series uses an adhesive template installation method that aligns the holder without secondary adjustment, and no brackets are required.
Specifications
| Model |
24120, surface mount, powder-coated chrome |
| Input voltage |
24 V (terminals C & L) or 120 V (terminals C & H) |
| Current draw |
20 mA at 24 VDC; 19 mA at 24 VAC; 20 mA at 120 VAC |
| Holding force |
40 lb (18.1 kg) at 24 V; 35 lb (15.8 kg) at 120 V |
| High holding force |
110 lb (49.8 kg) with 120 VAC on terminals C & L, special applications |
| Construction |
Die-cast metal |
| Connections |
Terminal block |
Features
- Very low current draw with dual voltage inputs.
- High holding force and low residual magnetism.
- Extension rods in 1, 1.5, 2, 3 in. and 4 in. adjustable lengths for doors more than 12 in. from the wall or misaligned over 4 in.
- Optional DHDF drilling fixture aligns the catch plate and armature.
Related models
- DH24120FPC — flush-mount version of the 24120 holder.
- DH24120SB / DH24120FB — 24120 holders in a brass finish.
- DH1224SPC — surface-mount model for 12 V or 24 V inputs.
Documents
FAQ
What voltage does the DH24120SPC use?
It is dual voltage: 24 V on terminals C and L, or 120 V on terminals C and H.
How much current does it draw?
20 mA at 24 VDC, 19 mA at 24 VAC and 20 mA at 120 VAC.
What is the holding force?
40 lb (18.1 kg) at 24 V and 35 lb (15.8 kg) at 120 V. For special applications, applying 120 VAC to the low voltage terminals (C and L) gives 110 lb (49.8 kg).
What if the door does not close flat to the wall?
Extension rods from 1 in. to 4 in. adjustable are available for doors more than 12 in. from the wall or misaligned by more than 4 in.
