
SECO-LARM Magnetic Door Holders
2SECO-LARM U.S.A., Inc.
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 Manual
2x Jumpers 2x 5*15 Machine screws 2x #10*11/4" Wood screws
4x 4*8 Machine screws 2x 3*10 Machine screws 1x Back box*
1x 1" Extension bar 1x Extension bar wrench
Wiring Diagram:
For 12VAC/VDC For 24VAC/VDC For 120VAC
Voltage
Selector
Jumper
(‐)(+)(‐)(+)(‐)(+)
COM12V24V120V
COM12V24V120V
COM12V24V120V
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)
* DH-151SQ only