
NOTE: Products with a model number that ends with “Q” or have a round green “Q” sticker represent RoHs compliant products.
Heavy-Duty Outdoor Stand-Alone Keypad
Also available from SECO-LARM:

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
Sample Application – Connecting to
a Gate Operator ........................................... 8
Wiring – Door Hold Open Code ..................... 9
Wiring – Auxiliary Accessories ...................... 9
Wrong Code Lockout ..................................... 9
Changing Code Length ................................. 9
Restoring Keypad to Factory Default ............ 9
Programming Instructions ..................... 10-11
Factory Defaults .......................................... 11
Troubleshooting ........................................... 11
Operation and Programming
Quick Reference Guide ............................... 12
Warranty ...................................................... 12
Features ........................................................ 2
Parts List ....................................................... 2
Specifications ................................................ 2
Overview ....................................................... 3
LED & Audible Indicators .............................. 3
Dimensions .................................................... 3
Important Notes ............................................. 4
Wiring Diagram .............................................. 4
Reed Jumper ................................................. 4
Installation ..................................................... 5
Wiring – Connecting to a Lock Device
and Arm/Disarm ............................................ 5
User Control Chart .................................... 6-7
Rugged construction: heavy-duty stainless-steel faceplate
with a coated steel backing.
Up to 210 user codes.
Code flexibility: Codes can be 4 or 5 digits long.
Dual voltage: 12~24 VAC/VDC operation.
2 Form C relays rated 12 Amps @ 14VDC.
Door sensing input allows for anti-tailgating operation.
Overhead LEDs and programmable backlit keys for easy use in the dark.
Each relay output can be set from 1~99 seconds or toggle.
Wrong code lockout: After 3 wrong codes are entered, the keypad will go into lockdown for
55 seconds.
All features are programmed directly from the keypad — no need for an external programmer.
EEPROM Memory protects programmed information in case of
power loss.
Tamper switch: N.C. dry contact, 3 Amp @ 125/250 VAC.
Egress / push button input.
220mA@12VDC / 110mA@24VDC
69/16”x51/16”x43/8” (167x128x112 mm)
1 x Keypad with steel box
1 x Manual
4 x Mounting screws
4 x Screw anchors
1 x Gasket
Replacement Key
(Sold separately)
SK-3523-KEY
2 SECO-LARM U.S.A., Inc.

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
LED & Audible Indicators:
Heavy duty: Weather and
vandal resistant for
protected installations.
Keylock: Provides secure
access to the interior of
the keypad.
Overhead LEDs: Illuminate
the face of the keypad.
LED indicators: Show the
status of the keypad.
Keypad: Heavy-duty
programmable backlit
keys provide years of use
in adverse weather.
CDS sensor: Turns on
overhead LEDs when the
surrounding area is dark.
Valid access code / valid entry
Enter / exit programming mode
Incorrect user code (3 sec. after code
entered) / invalid input programming mode
All Output #1 or Output #2 codes cleared
Keypad restored to factory default
Output #1 active/occupied
Waiting to program
Output #1 user code
Output #2 active/occupied
Waiting to program
Output #2 user code
*See Reed Jumper (page 4)
SECO-LARM U.S.A., Inc 3

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
When the reed jumper is in place (default), the door sensor input is bypassed.
To enable the door sensor input, place the reed jumper on one pin only.
When the door sensor input is enabled, connect the COM (-) terminal
and REED terminal to a N.C. contact. The keypad will deactivate
output #1 whenever the contact is opened and closed, working as an
anti-tailgating feature.
The green LED will flash rapidly whenever the N.C. contact is open
and the relay is inactive.
1. Always disconnect power before servicing the keypad.
2. The keypad must be properly grounded. Use a minimum 22AWG (18AWG is best) wire to
ground the circuit board’s earth terminal. Failure to do so may damage the keypad.
3. All wiring and programming should be done by a professional installer to reduce the risk of
improper installation.
4. Operating instructions are located on page 12 of this manual. Be sure to store this manual
in a safe place for future reference.
Earth ground terminal: Connect a continuous wire from the Earth Ground terminal to a grounding point to avoid
damage from static discharge. If using an AC adapter for power input, do not connect the AC adapter output to
Earth Ground.
Power 12~24 VAC / VDC (non-polarity)
Reed / door sensing input (N.C.)
Push button / egress input (N.O.)
Relay 1
12A@14VDC, Form C, NO/NC/COM
Relay 2
12A@14VDC, Form C, NO/NC/COM
N.C. Tamper output (3A@125/250VAC)
Door Sensor
Bypassed
(Default)
IF USING THE SK-3523-SDQ WITH A MECHANICALLY OPERATED DOOR OR
GATE, MOUNT THE KEYPAD AT LEAST 10 FEET FROM THE DOOR OR GATE TO
PREVENT USERS FROM BEING CRUSHED OR PINNED. FAILURE TO DO SO MAY
RESULT IN SERIOUS INJURY OR DEATH.
4 SECO-LARM U.S.A., Inc.

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
1. Unlock the keylock mounted on the face of the keypad
with one of the included keys.
2. Open the faceplate of the keypad. The hinge will allow
the faceplate to open to a 90° angle.
3. Remove the 1” wiring hole cover from back of keypad.
4. Run wires into the keypad using the 1” wiring hole on
the back of the enclosure.
5. Using the wiring diagram on pg. 4, wire the keypad
according to the specific application.
6. Place the included gasket between the keypad and
mounting surface.
7. If attaching the keypad to a mounting plate such as a
gooseneck stand, use the 4 mounting plate holes
located on the back of the keypad.
These holes are
used to mount the
keypad to a
gooseneck stand.
Wiring – Connecting to a Lock Device and Alarm Arm/Disarm:
1
Connect a IN4004 diode (not included) as close as possible and in parallel with an electric strike.
This absorbs possible electromagnetic interference to prevent operation of the strike from
damaging the keypad. Do not connect a diode when using electromagnetic locks.
2
Please consult the alarm control panel’s manual for more information.
To alarm control panel
(24-hour N.C. zone)2
To alarm control panel
(Alarm arm/disarm control)2
12~24
VAC/VDC
Power Supply
SECO-LARM U.S.A., Inc 5

SK-3523-SDQ – User Control Chart
Output #2: □ Toggle □ Timed (___secs.) Programmed for _________________
Output #1: □ Toggle □ Timed (___secs.) Programmed for _________________
Note: Up to 200 users may be programmed to Output #1.

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
Gate open/close signal input
Sample Application: Connecting to a Gate Operator
1. Run a continuous wire from the earth terminal to earth ground. For more details, please see
page 4, Earth Ground Terminal.
2. Run two wires from the gate operator’s power output terminals to the SK-3523-SDQ’s
power terminals.
3. Run two wires from Output #1 on the SK-3523-SDQ to the open/close signal input terminals of
the gate operator. Please consult your gate operator manual for more detailed instructions.
Gate open/close
signal input
8 SECO-LARM U.S.A., Inc.

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
4-Digit
code length
(Default)
12~24
VAC/VDC
Power
Supply
1. If an incorrect code is entered 3 times in a row, the keypad will lock down.
2. To use the keypad again wait 55 seconds or disconnect and reconnect the power.
3. To avoid lockout, wait 5 seconds after entering an incorrect code. The keypad will give 3
short beeps. It is now safe to enter another code without being locked out.
1. Disconnect power to the keypad.
2. To make the code length 5 digits, place the PIN3 jumper on pins 1 and 2.
3. To make the code length 4 digits, place the PIN3 jumper on pins 2 and 3 (default).
4. Reconnect power to the keypad.
5. Keypad will beep 22 times, then return to standby mode.
Note: This will delete all previous codes, including the master code. All
other programming will remain.
For N.C. locking devices:
Connect output 2 in series with the locking device
For N.O. locking devices:
Connect output 2 in series with the locking device
Wiring – Door Hold Open Code:
Wiring – Auxiliary Accessories:
Relay Output #2 – Example, to shunt
an alarm N.C. zone
Restoring Keypad to Factory Default (see pg. 11):
1. Pull the PIN2 jumper from pins 1 and 2 (default).
2. Place the PIN2 jumper on pins 2 and 3. Wait for the keypad to beep 26 times.
3. Pull the jumper and place on pins 1 and 2. The keypad is now ready to be
reprogrammed using the programming instructions on page 10.
Note: This resets the keypad to factory default settings. All user codes
are deleted and the master code is 1234 or 12345 (see above).
To the protection zone of
an alarm control panel
Keypad will
beep 26 times
Magnetic
Door Contact
(N.C.)
Magnetic
Door Contact
(N.C.)
12~24
VAC/VDC
Power
Supply
S.R. (System restore)
JUMPER
S.R. (System restore)
JUMPER
S.R. (System restore)
JUMPER
SECO-LARM U.S.A., Inc 9

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
Restart from Step 1 to program another Output #2 User Code.
Return to programming mode by entering:
1. The master code is always 4 or 5 digits, depending on the set code length (see pg. 9).
2. To enter programming mode enter the master code twice.
Example: If the master code is 1234, enter
3. To exit programming mode, press the key or wait 25 seconds.
Programming a New Master Code:
NOTE: The default master code is 1234 (4 digits) or 12345 (5 digits)
Program a new master code immediately.
Take note of the keypad status LEDs.
If you are unsure of which mode the keypad is in, repeatedly press until the yellow
LED is flashing steadily, then re-enter programming mode.
The yellow LED will turn solid,
confirming the new master code.
Programming Instructions:
Programming an Output #1 User Code:
NOTE: No code may be set as 0000 or 00000.
If the green LED is solid,
delete the existing code
by entering:
If the green LED is
flashing, proceed to the
next step.
The green LED will turn
solid, confirming the new
user code.
Return to programming mode by entering:
Programming an Output #2 User Code:
NOTE: No code may be set as 0000 or 00000.
If the red LED is solid,
delete the existing code
by entering:
If the red LED is
flashing, proceed to the
next step.
The red LED will turn
solid, confirming the new
user code.
Restart from Step 1 to program another Output #1 User Code.
Return to programming mode by entering:
10 SECO-LARM U.S.A., Inc.

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
10 Seconds after a key press
Keypad programming option won’t work
Make sure the keypad is in programming mode. Enter
programming mode by entering the master code twice.
Make sure to press before every programming option.
Press until you have exited programming mode. Try
entering programming mode again.
Keypresses and programming options won’t register
The keypad may be in lockout mode. Wait 55 seconds,
or disconnect and reconnect the power
A device wired to the keypad won’t activate
Check the wiring diagram on page 4.
Setting Output #1 or Output #2 Timer:
NOTE: Default setting is 5 seconds for both outputs.
Deleting All Output #1 or Output #2 User Codes
Programming the Keypad Backlighting
NOTE: Default setting is keypad backlighting is ON for 10 seconds after a key press.
Keypad backlighting is always OFF
Deleting Individual Output #1 or Output #2 User Codes:
Deletes all output codes for the selected output.
Keypad backlighting is always ON
Keypad backlighting is ON for 10 seconds after a key press
Return to programming
mode by entering:
Return to programming mode by entering:
Return to programming mode by entering:
Keypad will beep 15 times after deleting output codes.
Return to programming
mode by entering:
SECO-LARM U.S.A., Inc 11

ENFORCER Heavy-Duty Outdoor Stand-Alone Keypad
NOTICE: The information and specifications printed in this manual are current at the time of publication. However, the
SECO-LARM policy is one of continual development and improvement. For this reason, SECO-LARM reserves the right to
change specifications without notice. SECO-LARM is also not responsible for misprints or typographical errors.
Copyright © 2013 SECO-LARM U.S.A., Inc. All rights reserved. This material may not be reproduced or copied, in whole
or in part, without the written permission of SECO-LARM.
WARRANTY This SECO-LARM product is warranted against defects in material and workmanship while used in normal
service for a period of two (2) years from the date of sale to the original consumer 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 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 damages of any kind to the purchaser or anyone else.
Operation and Programming Quick Reference Guide:
SECO-LARM
®
U.S.A., Inc.
16842 Millikan Avenue, Irvine, CA 92606 Website: www.seco-larm.com
Tel: 800-662-0800 / 949-261-2999 Fax: 949-261-7326 E-mail: info@seco-larm.com
Enter an Output #1 user code
Directly enter on the keypad
Enter an Output #2 user code
Directly enter on the keypad
Enter the master code twice
Press repeatedly until the yellow
LED is flashing steadily.
Programming a new
master code
Enter the new master code
Programming an
Output #1 user code
Enter an Output #1
ID number 001~200
Enter an Output #1 user code
Programming an
Output #2 user code
Enter an Output #2
ID number 201~210
Enter an Output #2 user code
Enter an ID number
001~210
Enter: 00 for toggle
01 to 99 for # seconds
output will activate
Enter: 00 for toggle
01 to 99 for # seconds
output will activate
Delete all Output #1
Users
Delete all Output #2
Users
Note: For complete programming instructions, please see page 10, Programming Instructions.
The following functions are performed after entering Programming Mode.
12 SECO-LARM U.S.A., Inc.