Technical Data
Effective November 14, 2014
LK4 – LiteKeeper 4
Catalog#
Prepared by
Project
Date
Comments
Type
Overview
The LiteKeeper 4 stand-alone lighting control panel is an all-inclusive,
premium grade system for applications that would traditionally use a
timeclock in conjunction with contactors. Each panel allows control
of up to four 20A circuits. The LiteKeeper 4 has more standard
features than any other stand-alone panel on the market to create a
state of the art stand-alone lighting control system.
Features
Manual and programmable control of each relay via a simple
keypad and 2 line LCD display
Normally open relays
Relays are built onto control board
Technical Data 
LK4 – LiteKeeper 4


November 2014
Specifications
Enclosure
Size
Transformer
Ratings
Power Use
Ratings
Operating
Environment
Master Override
Programming
Standard Relay
Ratings
Standards
NEMA 1 surface mount, lockable
9.5”H x 14”W x 3.25”D
120 VAC or 277 VAC
System Includes
UL Listed – UL 916 standard
NEMA 1 enclosure
4 20A relays
4 low voltage input connections
Fully loaded panel 20 watts
Time schedules with astronomic clock
Temperature: 32°F to 122°F (0°C to 50°C)
Prioritization and masking of switch inputs, time schedules and
remotes
ON/AUTO/OFF
Onboard keypad and LCD display
Optional PC Software
20A, 120/277 VAC
Normally open
Maximum wire size: 10 AWG
Mechanical operations: 10 million
UL Approval
UL 916 Listed
Timed inputs
Occupant warn-off and overrides
Keypad and 2 line LCD display
RS-232 port standard
Accessories
Keeper Enterprise Software
Ethernet Interface Module
Telephone Interface Module
Dry Contact Switch
Contact Input Photosensor
Occupancy Sensor
CEPC
Dimensions
Enclosure
14"
9.5"
2
www.coopercontrol.com
3.25"
Technical Data 
LK4 – LiteKeeper 4


November 2014
Sample One-Line
Lighting control panel power supply:
Voltage specific transformer. Specify 120 VAC or 277 VAC
for the transformer voltage.
Typical relay wiring:
Typical
Photosensor
for On/Off control
Line
Load A
Line
Load B
Line
Load C
Line
Load D
C
#
D
ON
B
9
0
ON
6
8
DC GND
ON
5
OFF
*
+24VDC
ON
7
OFF
4
+24
A
OFF
3
+24
2
OFF
1
+24
PCI LITEKEEPER
12:OO O1/O1/95
+24
Typical
Occupancy Sensor
for On/Off control
The Ethernet Interface Module (EIM) and
Wireless Ethernet Interface Module (WEIM)
may be connected to any lighting control panel
in the system using the RS-232 cable included
4 low voltage inputs
(Momentary, Maintained, Alternate Action
switches, occupancy sensors and photosensors)
Each input is software programmable to
control any relay or group of relays
.
120 VAC wall transformer included
End user computers
can program any lighting control
panel via the Wireless Ethernet Interface Module (WEIM)
using the Keeper Enterprise software.
Ordering
Catalog #
Number of
Relays
Input Voltage
Relay Type
LK4-120NO
LK4-277NO
4
4
120 VAC
277 VAC
120/277 VAC standard, normally open
120/277 VAC standard, normally open
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
Eaton’s Cooper Controls Business
203 Cooper Circle
Peachtree City, GA 30269
coopercontrol.com
© 2014 Eaton
All Rights Reserved
Printed in USA
Publication No. ACC141021
November 14, 2014
Standard relay information
Qty 4 - 20 amp 120/277 VAC single pole relays
Available normally open or normally closed
Individual status LED manual overrides
10 AWG maximum wire size
10 million operations
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.