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CONTENTS

INTRODUCTION

Linear’s AK-31 is a digital keyless entry system designed for access control 
applications. The keypad is housed in a rugged, plastic enclosure and is designed 
to be mounted in a standard single-gang electrical box. The die-cast keys have 
bright, easy-to-read yellow graphics.
Up to 480 entry codes, from 1 to 6 digits in length, can be programmed. They can 
activate either, or both, of the relay outputs. The “anti-passback” feature prevents 
using the same code again before the programmed time elapses.
All system indicators are long-lasting, solid-state LEDs. Two indicators show the 
status of the entry system. The left indicator lights red to indicate power, then 
turns green when access is granted. The right indicator lights yellow when the 
keypad is in “lockout” condition (from too many incorrect code entries). An internal 
sounder beeps when each key is pressed. An internal jumper sets the sounder 
volume high or low.
The 

SENSE

 input can be used two ways. If programmed for “door sense” the 

input is wired to a normally closed switch on the door to detect when the door is 
open or closed. Forced entry or door ajar situations can then be detected. Using 
door sense, the “Auto-relock” feature will prevent “tailgating” by turning off the 
Main Relay output immediately when the door is closed after access has been 
granted. If the 

SENSE

 input is programmed for “inhibit”, the input can be wired 

to a “service” switch or automatic timer that will disable the Main Relay when 
required.
The 

REQUEST-TO-EXIT

 input can be wired to a pushbutton to provide 

codeless activation of Main Relay, Auxiliary Relay, Output #3, or Output #4 
(programmable).
The 

ALARM SHUNT

 output activates when access is granted. This output can 

be wired to shunt alarm contacts on the access door/gate to prevent triggering of 
an alarm when authorized access occurs.
The AK-31 is powered from a 12-24 Volt AC or DC source. Power can be obtained 
from the access device or a separate power supply. The EEPROM memory 
retains all entry codes and programming, even without power. An internal jumper 
is provided to reset the master code. The Main Relay has a 5 Amp capacity. 
The Auxiliary Relay has a 1 Amp capacity. Two solid state outputs, capable of 
switching 100 mA to common, are programmable to signal forced entry, door ajar, 
lockout, alarm circuit shunting, request-to-exit, and keypad active conditions.

FEATURES

 KEYPAD PROGRAMMABLE

No programmer required

 480 ENTRY CODE CAPACITY

Ideal for small & medium traffi c installations

 1-6 DIGIT ENTRY CODE LENGTH

Flexible code length for different applications

 4 INDEPENDENT OUTPUTS (TIMED/TOGGLED)

Each output’s action is programmable

 4 INDEPENDENT TIMERS

Each output’s activation time is programmable

 TWO FORM “C” (N.O. & N.C) RELAY CONTACTS

Main Relay 5-Amp @ 28 VDC capacity,
Auxiliary Relay 1-Amp @ 28 VDC capacity

 EACH ENTRY CODE CAN ACTIVATE EITHER OR BOTH RELAYS

Specifi c entry codes can grant access to different doors

 TWO SOLID STATE OUTPUTS

Auxiliary outputs can indicate access status on external devices

 TWO STATUS INDICATORS (2-COLOR RED/GREEN & YELLOW)

Displays access, lockout, and programming information

 PIEZO SOUNDER (TWO SELECTABLE VOLUME LEVELS)

Programmable for beeps during key presses and output activations

 TIMED ANTI-PASSBACK

Disables entry code for a programmed time after use

 AUTO-RELOCK

Releases the main relay as soon as the door shuts

 KEYPAD LOCKOUT

Locks the keypad after too many incorrect entries

 TACTILE KEY FEEL

Assures complete key presses

 DOOR SENSE INPUT

For sensing door position to control auto-relock and door-ajar features

 INHIBIT INPUT

For temporarily disabling access with a timer or switch

 REQUEST-TO-EXIT INPUT

For codeless activation with a pushbutton

 KEYPAD CAN BE POWERED FROM 12-24 VOLTS AC OR DC

Power can be supplied from a transformer, battery, or power supply

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COMPONENT LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Opening the Keypad  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Install the Electrical Box and Mounting Plate . . . . . . . . . . . . . . . . . . . . . . 2
Final Keypad Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Keypad Wiring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Solid State Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

FACTORY DEFAULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BASIC PROGRAMMING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PROGRAMMING OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RESETTING KEYPAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Master Reset  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Resetting the Master Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

AK-31 OPERATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
LINEAR LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
IMPORTANT !!!  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FCC NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Summary of Contents for AK-31

Page 1: ...1 2 3 4 5 6 7 8 9 0 AK 31 Digital Keyless Entry System 760 438 7000 USA Canada 800 421 1587 800 392 0123 Toll Free FAX 800 468 1340 www linearcorp com Installation and Programming Instructions ...

Page 2: ...s and programming even without power An internal jumper is provided to reset the master code The Main Relay has a 5 Amp capacity The Auxiliary Relay has a 1 Amp capacity Two solid state outputs capable of switching 100 mA to common are programmable to signal forced entry door ajar lockout alarm circuit shunting request to exit and keypad active conditions FEATURES KEYPAD PROGRAMMABLE No programmer...

Page 3: ...DC MAX AUXILIARY RELAY 1 AMP 28 VDC MAX TERMINAL BLOCK 1 WIRES AK 31 TERMINALS CAUTION IF THE UNIT IS AC POWERED MAKE SURE THE SECONDARY OF THE SYSTEM TRANSFORMER IS ISOLATED FROM EARTH GROUND OPTIONAL WIRING REQUIRED WIRING OTHER WIRING NOTES 1 ALARM SHUNT SET FOR AUXILIARY RELAY 2 GRAY WIRE SET FOR DOOR SENSE GROUND STAKE N C DOOR SWITCH ALARM CONTACT TO ALARM SYSTEM POWER SUPPLY ELECTRIC DOOR S...

Page 4: ...in the wall Screw the mounting plate onto the electrical box see Figure 4 Final Keypad Installation After wiring the keypad see next page complete the installation by securing the keypad to the mounting plate If a lower beeper sound level is required before installing the keypad remove Jumper at P4 place the jumper block on one pin to save the jumper Hook the keypad assembly onto the mounting plat...

Page 5: ...e switch to the keypad box Connect the door switch to the keypad s SENSE input gray wire E8 and COM any black wire If an inhibit switch or timer is going to be used for temporarily disabling the keypad route two wires from the switch or timer to the keypad box Connect the inhibit switch timer normally open terminals to the keypad s SENSE input gray wire E8 and COM any black wire REQUEST TO EXIT IN...

Page 6: ... during programming to clear the keypad and re enter the command Press 9 Setting Entry Code Length Default 4 digits Press 0 3 Length Length 1 6 for entry code length NOTE If the Entry Code Length is going to be changed from the factory default of four digits make this change first before programming any entry codes Adding a New Entry Code Press 01 Code Code Action Code The new entry code 1 999999 ...

Page 7: ...o 2 seconds Press 1 4 Output Output Output to Activate 0 4 1 Main Relay 2 Auxiliary Relay 3 Output 3 4 Output 4 0 No Output Select Alarm Shunt Output Default No Output Sets which output activates during the time access is granted Use this output to shunt alarm contacts attached to the access door This output may be timed or toggled Press 1 5 Output Output Output to Activate 0 4 1 Main Relay 2 Auxi...

Page 8: ...maximum ENVIRONMENTAL Temperature 22 F to 149 F 30 C to 65 C Humidity 5 to 95 non condensing LINEAR LIMITED WARRANTY This Linear product is warranted against defects in material and workmanship for twenty four 24 months The Warranty Expiration Date is labeled on the product This warranty extends only to wholesale customers who buy direct from Linear or through Linear s normal distribution channels...

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