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K641L-EQ00 05/2011 

K641/K641LX LCD Keypad

Quick Start

How to Arm

Arming When Exiting (Regular/Force Arm)

To arm your system when exiting:

Arming When Staying (Stay/Instant Arm)

To arm your system when staying:

Overview

K641LX shown

LCD (displays system 
status and messages)

Arrow keys (use to scroll the 
menu options)

AC light (ON = power ON;

OFF = power OFF)

Status light (ON = zones closed

OFF = zones open

Flash = exit delay)

RX/TX logo (K641LX only)

Enter key (saves current data 
and exits current menu)

ACC key (press for 2 seconds to 
perform an action without 
entering an access code)

Clear key (erases current data entry

or reverts to preceding step)

Step Description

1.

Enter your 

[

ACCESS

 

CODE

].

• To Regular arm, press the 

[

ARM

]

 

key (arms entire 

area when all zones are closed).

• To Force arm, press the 

[

FORCE

]

 key (arms entire 

area without waiting for all zones to close).

2.

Select the desired area or press the

 [0]

 key for 

all areas.

Step Description

1.

Enter your 

[

ACCESS

 

CODE

]

.

• To Stay arm, press the 

[

STAY

]

 key (arms area’s 

perimeter only, which allows you to remain in the 
protected area).

• To Instant arm, press the 

[5] 

key (stay arms the area 

but an alarm will occur instantly any zone opens)

2.

Select the desired area or press the

 [0]

 key for 

all areas.

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