SECO-LARM SD-231-ND1Q User manual

®
SD-231-ND1Q
Electro-Mechanical Latch
Manual
Features:
12VDC, Fail-secure operation with
manual override
Fully mechanical – can be unlocked if
power is lost
Unlocks from outside with included keys
Easy to install on existing gates/doors
Compatible with access control devices
Can be installed on left, right, in-swing, and
out-swing gates/doors
2,250-lb (1,020kg) Static strength

SECO-LARM Electro-Mechanical Latch
2SECO-LARM U.S.A., Inc.
The SD-231-ND1Q Electro-Mechanical Latch is designed for pedestrian gates or doors and can be
triggered by an access control system, by key from outside, or by manually turning the knob from
inside. It can be mounted on both in-swing and out-swing doors, and is also non-handed.
1x Lock body 1x Strike body 1x Key plate
1x Key guard 1x Cylinder lock 3x Keys
8x M5 Self-tapping screws 4x M3 Self-tapping screws 2x Long screws
2x Lock body cover screws 1x Mounting template 1x Manual
Operating voltage 12VDC
Current draw Standby 0A@12VDC
Active 3A@12VDC Maximum
Static strength 2,250-lb (1,020kg)
Endurance 500,000 cycles (factory tested)
Operating temperature -40°~122° F (-40°~50° C)
Dimensions Lock Body 51/8"x315/16"x111/16" (130x100x43 mm)
Strike Body 17/16"x315/16"x15/8" (36x100x41 mm)
Specifications:
Overview:
Introduction:
Parts List:
Long screws
Ke
y
p
late
Key guard
Cylinder lock
Lock body
(cover removed)
M3 Self-tapping screw
M5 Self-tapping
screw
Sample Installation:
Door frame
Inside
Outside
Inside
Outside
Door frame Door
In-swing gate/door
Out-swing gate/door
Fig. 1
Door
NOTE: For in-swing gates/doors, mount the lock body on the door. For out-swing doors, mount the
lock body on the gate/door frame. Note the offset mounting so that the strike pin clears the
frame/gate when opening (see Fig. 1).

SECO-LARM Electro-Mechanical Latch
SECO-LARM U.S.A., Inc. 3
Installation:
1. Determine the best mounting location for the strike
body and lock body. The recommended distance
between the strike body and the lock body is 3/16"
(5mm) (see Fig. 2). Note the offset mounting as
shown in Fig. 1.
2. Place the included template on the closed gate/door
and the frame. Drill four 1/8" (3mm) holes for
mounting the lock body, four 1/8" (3mm) holes for
mounting the strike body, a 11/4" (32mm) hole for
the cylinder lock, and a hole to run the wires to the
lock body.
NOTE: Template/lock's orientation varies dependin
g
on the handedness of the door/gate.
3. Install the key plate to the gate/door or frame with
four M3 self-tapping screws (see Fig. 3).
4. Assemble the cylinder lock from the opposite side of
the door so that the cylinder lock's flat pin can be
inserted into the lock body.
NOTE: The cylinder lock's flat pin and long screws
(used to secure the cylinder lock as noted
below) should be cut to the appropriate
length before they are installed.
5. Secure the cylinder lock in place with the two long
screws (see Fig. 4).
6. Remove the cover of the lock body by unscrewing
the two screws on the side of the lock body.
7. Using four M5 self-tapping screws, mount the lock
body (see Fig. 5).
8. Unscrew and remove the cover of the strike body.
9. Using four M5 self-tapping screws, mount the strike
body to the door/gate or frame and reattach the
strike body's cover (see Fig. 6).
10. Connect the wires (non-polarized) to an access
control system.
11. Test the latch to ensure it is working properly.
12. Reattach the lock body’s cover.
NOTE: Copy keys as necessary and save one as
the master key. Replacement keys are
not available.
3/16" (5mm)
Fig. 2
Fig. 6
Fig. 3
Fig. 5
Fig. 4

SECO-LARM Electro-Mechanical Latch
4SECO-LARM U.S.A., Inc.
Does not lock
Make sure the lock is engaging the strike body
Make sure the mechanism is moving freely
Lubricate moving parts with graphite lubricant
Does not unlock
Make sure the lock is engaging the strike body
Check to see if the lock is receiving the correct input voltage
Make sure the power supply has sufficient current to operate the lock
Also Available from SECO-LARM
®
:
Troubleshooting:
SECO-LARM
®
U.S.A., Inc.
16842 Millikan Avenue, Irvine, CA 92606 Website: www.seco-larm.com
Phone:
(
949
)
261-2999
|
(
800
)
662-0800 Email: sales
@
seco-larm.com
®
PICHN5
MI_SD-231-ND1Q_170822.doc
x
NOTICE: The SECO-LARM policy is one of continual development and improvement. For that reason, SECO-LARM
reserves the right to change specifications without notice. SECO-LARM is also not responsible for misprints. All trademarks
are the property of SECO-LARM U.S.A., Inc. or their respective owners. Copyright © 2017 SECO-LARM U.S.A., Inc. All
rights reserved.
WARRANTY:
This SECO-LARM product is warranted against defects in material and workmanship while used in normal
service for one (1) year from the date of sale to the original customer. SECO-LARM’s obligation is limited to the repair or
replacement of any defective part if the unit is returned, transportation prepaid, to SECO-LARM. This Warranty is void if
damage is caused by or attributed to acts of God, physical or electrical misuse or abuse, neglect, repair or alteration,
improper or abnormal usage, or faulty installation, or if for any other reason SECO-LARM determines that such equipment
is not operating properly as a result of causes other than defects in material and workmanship. The sole obligation of
SECO-LARM and the purchaser’s exclusive remedy, shall be limited to the replacement or repair only, at SECO-LARM’s
option. In no event shall SECO-LARM be liable for any special, collateral, incidental, or consequential personal or property
damage of any kind to the purchaser or anyone else.
IMPORTANT: Users and installers of this product are responsible for ensuring this product complies with all national,
state, and local laws and statutes related to monitoring and recording audio and video signals. SECO-LARM will not be
held responsible for the use of this product in violation of any current laws or statutes.
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