Seco-Larm DH-151SQ, DH-171SQ User Manual
Magnetic Door Holders
Manual
For use with door closers to control the
release and closing of residential,
commercial, and public area doors
Adjustable armature plate reduces
installation time and adjusts to door
alignment changes
Surface-mount or flush-mount
models available
Fail-safe operation
Low profile design
Holding force – 33-lb (15kg)
3 voltages: 12/24 VAC/VDC, and 120VAC
Cast aluminum faceplate
No residual magnetism for easy release
Built-in voltage spike suppressor
Optional extension bars available:
1
/2", 3/4",
1", 2", 3", 4", 5", 6", 7"
Use with SECO-LARM door closers
SD-C121-S, SD-131-SQ, SD-C101-SGQ,
SD-C101-SBAQ, or SD-C101-SBBQ
Features:
DH-151SQ
Surface-mount
DH-171SQ
Flush-mount
DH-151SQ
DH-171SQ
SECO-LARM Magnetic Door Holders
Introduction:
The SECO-LARM Magnetic Door Holders are designed for virtually any remote door release
applications. The UL Listed SECO-LARM Magnetic Door Holders, used in conjunction with
UL Listed SECO-LARM door closers, control the release and closing of residential, commercial,
and public area doors including apartments, schools, hotels, hospitals, and offices. Fail-safe
operation, tri-volt coils, and adjustable armature plate allows for easy and flexible installation.
SECO-LARM Magnetic Door Holders also come in surface-mount or flush-mount models with full
mounting hardware included.
Model
DH-151SQ
DH-171SQ
Installation
Surface-mount
Flush-mount
Current draw
52mA@12VAC, 60mA@12VDC
27mA@24VAC, 31m@24VDC
24mA@120VAC
Holding force
33-lb (15kg)
Magnet box dimensions
23/4"49/16"x3"
(70x116.5x76 mm)
23/4"x49/16"x21/16"
(70x116.5x52 mm)
Door armature dimensions
29/16"x29/16"x 19/16" (65x65x40 mm)
Magnet box weight
1-lb 6.4-oz (920g)
1-lb 1.5-oz (468g)
Door armature weight
8.1-oz (230g)
Operating voltage
12 VAC/VDC, 24 VAC/VDC, 120VAC
Specifications:
Parts List:
1x Door holder
1x Armature plate
1x Back box (DH-151SQ only)
1x Manual
2x Jumper
2x #10*1
1
/
4
" Wood screws
4x 4*8 Machine screws
2x 3*10 Machine screws
2x 5*15 Machine screws
Wiring Diagram:
For 12VAC/VDC
For 24VAC/VDC
For 120VAC
Voltage
Selector
Jumper
( - ) ( + )
( - ) ( + )
( - ) ( + )
COM 12V 24V 120V
COM 12V 24V 120V
COM 12V 24V 120V
Available Accessories: Extension Bars
DH-100E-05SQ
1
/2" (13mm)
DH-100E-20SQ
2" (50mm)
DH-100E-50SQ
5" (127mm)
DH-100E-07SQ
3
/4" (19mm)
DH-100E-30SQ
3" (76mm)
DH-100E-60SQ
6" (152mm)
DH-100E-10SQ
1" (25mm)
DH-100E-40SQ
4" (102mm)
DH-100E-70SQ
7" (178mm)
2 SECO-LARM U.S.A., Inc.
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