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K4

02

1

Instructions for installing K4XXX
and LC4XXX series photo controls

Common problems - read first!

1. Do not face the photocell into the midday sun. If installed on

the south side of a building, face east or west or point the photo 
control down toward the ground.The best direction to face the 
photo control is north.

2. Do not face the photocell whee it can see artificial light.

Light from windows, signs, street lights, etc., will cause the photo 
control not to switch on.The photo control should not be 
positioned so that it sees the light it is controlling (or reflected 
light).These conditions will cause the light to cycle on and off.

3. Do not install the photo control with wires up unless there

is NO POSSIBILITY of water entering the photo control 
around the wires. 
The photo control must be installed in an 
approved weatherproof box. Do not attempt to caulk around the 
wires.

4. When you are testing the photo control, be sure to turn 

on the power (load will come on) and wait up to 5 minutes
for photocell to switch load off. 
For further testing cover the 
photo control completely with black tape or another dark material
to simulate night conditions. If you can’t cover the control with 
tape, try covering the photo control with the shipping carton to 
simulate night conditions.

WRONG!

RIGHT!

Installation Instructions:

1.

Turn power off.

2.

Line voltage must be the same as indicated on the control label. Check it!

3.

Select a location or mount the photo control so that artificial light doesn’t cause the unit 
to turn off. Do not install the photo control so that it directly faces the midday sun. See 
Common Problems 1, 2 and 3 above.

4.

The photo control can be mounted in any approved outdoor junction box or fixture (see 
illustrations on page 2).

5.

Wire the photo control according to the illustrations.

6.

Switch power on. the controlled load should turn on regardless of whether you are 
installing the unit during the day or at night.

7.

If it is daylight the control should switch off within a few minutes. See important note 
on next page.

Specifications:

Operating Temperature Range: -40˚ to 150˚F (-40˚ to 67˚C).
Voltage: 347 Volts
Frequency: All controls operate on 50 or 60 hertz.

Note: A switch can be added
between the red lead and the load
to switch off at selected times
after dark.

Line #1

Line #2          

Blk. Wht.

Red

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