Installation Instructions
- 2 -
INSTALLATION
3
Caution
3-1
SEPARATING
1
• Do not place the main 
unit where it is exposed 
to direct sunlight. Doing 
so may cause damage to 
the product.
4
Remove the main unit from the back box.
5
Remove the main unit mounting bracket.
Remove the battery 
cover. 
2
Remove the main unit 
cover.
3-2
WALL MOUNTING
1
Using a screwdriver or similar tool, break 
the knockout position (×2) in the back 
box as shown.
2
3
6
Replace batteries.
Disposal method for batteries
Note>>
Using Velcro tape, fix the wireless 
transmitters in the back box.
For more information on wiring, 
see “3-5 WIRING” on page 3.
5
Attach the connectors.
• When using BCU-4 (option), refer to 
BCU-4 manual.
4
Mount the main unit. 
7
Referring to “4 SETTING” on page 3, 
perform the necessary settings. 
8
Close the main unit cover.
Warning
• When closing the cover, be careful that 
the cables are not caught by the cover. 
Caution
9
Close the battery cover.
Caution
• Do not touch the optical unit 
when mounting the cover. 
Otherwise, the resulting shift 
of the optical axis may result 
in malfunction of the unit and 
require readjustment.
3
Remove the connectors.
Pull
2
Pull
2
Loosen the 
battery cover 
lock screw.
1
Loosen the 
main unit cover 
lock screw.
1
Velcro tape
Cut the supplied Velcro 
tape to an appropriate 
length and apply.
3-3
POLE MOUNTING
1
Using the guide below, break the knockout positions (×2) in the back box with a screwdriver.
3
Perform the wall 
mounting procedure of 
 3 to 9 on page 2.
One detector
Two detectors in 
opposing directions
Knockout position
Detector No. 1 Detector No. 2
Instruction 
condition
POLE (1) -
POLE (1) POLE (2)
Caution
• If you accidentally open an 
unnecessary knockout, be sure 
to fill the knockout. Not doing so 
may result in waterproof failure 
and malfunction of the product.
Insert the two batteries into their 
compartment. Ensure the positive 
terminals are facing toward the front.
2
Close the battery plate. 
3
Connect the CRH-5 male connectors 
to the female connectors of the 
battery plate.
4
1
Open the battery plate in the 
direction of the arrow.
Set CR123A in the CRH-5 and insert 
two CRH-5 into their compartment. 
Ensure the positive terminals are 
facing toward the front.
2
Close the battery plate. 
3
1
Open the battery plate in the 
direction of the arrow.
< When using D size battery >
< When using CR123A battery >
Mount the back box to the wall.
•  Do not mix D size lithium batteries with CRH-5 batteries.
•  Do not mix batteries that have different levels of power remaining (i.e., new 
and used batteries or batteries of different manufacturers). Not observing 
the above may result in an explosion, leakage of electrolyte, emission of 
toxic gases or other outcomes that may be harmful to people and property.
Caution
•  Remove all batteries prior to replacing with new ones. If this is not followed, 
the low battery indicator LED will not reset and will continue to blink.
Open the screw holes from the 
inside of the back box to the 
outside.
Open the screw holes from the inside 
of the back box to the outside.
Dispose of used batteries in accordance with local 
government regulations/low and EU Battery 
Directive (2006/66/EU).
Take the main unit out 
of the back box. 
2
1
3
Turn the optical unit 
90 degrees and 
loosen the screw.
1
2
Tighten the main unit fixing 
screw and turn the optical unit 
90 degrees.
3
1
Attach the main unit 
mounting bracket to the back 
box.
2
Route the three connectors 
of the back box through the 
slits on the upper part of the 
main unit.
1
3
4
Tighten the fixing screw for the battery cover.
2
2
Close the battery cover.
1
Knockout position
WALL
POLE (1)
POLE (2)
Knockout position
WALL
POLE (1)
POLE (2)
4×20 self tapping
(with rubber washer)
Side wall
Distance from 
the side wall: 
at least 1m
Pitch: 83.5 mm
For connection 
to gang electric 
box
1
3
4
2
3.9 VDC D size 
Lithium batteries
CRH-5 
3.0 VDC CR123A
1
2
3
Hook on the upper part 
of the back box.
Push the lower part of 
the main unit cover.
Fasten the main unit 
cover lock screw.
2
1
3
2
Fix the back box on the pole. 
Side wall
M4×20 screw
(with rubber washer)
Pole bracket
U-bracket
Distance from the side 
wall: at least 1m
Pole 43 to 48 mm dia.
(1.69 to 1.89 inch dia.)
Detector 
No. 1
Detector 
No. 2
Just fit
Note>>
•  Avoid placing the cables 
in a position where they 
can be caught between 
the main unit and cover.
This unit used to enable 
wired operation. 
For more information on 
connecting, see PCU-5 
manual.
- 3 -
Set the voltmeter range to 5 to 
10VDC and connect the voltmeter 
probes and to and of 
the monitor jack respectively.
1
Avoid installing the transmitter and receiver facing each other through the corner of the cover.
Refer to “1-3 PARTS IDENTIFICATION”.
(factory default)
2
In doing this installation, the maximum detection 
range shall be half of the original detection 
range. (This is to compensate the attenuation of 
beam by the corner of the cover.)
Attach the BCU-5 to the 
battery plate using 
double-sided adhesive tape.
•  Be careful not to cover the 
power/low battery indicator 
LED.
•  Select a location that does 
not interfere with the 
connector installation. 
3-4
MOUNTING EXAMPLE AT PARTICULAR CASE
3-5
WIRING
Warning
•  When using BCU-5 (option), be sure to 
read the BCU-5 manual. Do not insert 
batteries into the wireless transmitter. 
Doing so may result in fire or explosion.
•  To monitor low battery levels separately for the receiver and the transmitter, install a wireless transmitter in each of them. When the low 
battery levels are monitored for both the receiver and transmitter centrally, install a wireless transmitter in only the receiver.
•  If there is only an N.O. output on a wireless transmitter, the low battery output and tamper output cannot be used.
•  The power supply can be shared between the back box and wireless transmitter by using BCU-5 (option).
•  When using PCU-5 (option) with either only the transmitter or receiver, ensure the low battery signal is monitored. (Refer to PCU-5 manual.)
Note>>
SETTINGS
4
Optical alignment is an important 
procedure to increase reliability. 
Be sure to take alignment step 
 1 through 2 described below to 
attain the maximum level of the 
output through the monitor jack.
4-2
OPTICAL ALIGNMENT
Horizontal alignment angle Vertical alignment angle
1
2
Look into the viewfinder and perform fine alignment of the horizontal and vertical 
angles using the alignment dial.
< How to look into the viewfinder >
Note>>
Caution
Alarm/Level 
indicator 
LED
Beam 
interrupted
Beam received
Adjustment 
level
Monitor jack 
output
Realign Fair Good Excellent
0 V 0.1 VDC 2.0 VDC 2.8 VDC
ON Fast blink Slow blink OFF
• 
The Alarm/Level indicator LED is a supporting tool for easy 
alignment. Be sure to perform fine alignment to ensure the 
maximum output level through the monitor jack.
•  The Alarm/Level indicator LED should only be used for 
rough alignment. For fine or good alignment, always use 
the monitor jack output level.
< Horizontal alignment >
< Vertical alignment >
< Receiver >
 Fine adjustment with monitor jack
Checking the Indicator LED and 
fine alignment
Checking of the illumination 
< Receiver >
Note>>
•  When making the adjustments by the monitor jack, be careful not to 
cover the optical unit with your hand, the voltmeter pin cord, etc.
•  After the rough alignment using the view 
finder, check the light receiving status by 
the Alarm/Level Indicator.
•  After checking the receiving level of optical 
axis by using the alarm indicator, make sure 
to make fine alignment for both transmitter 
and receiver with voltmeter until it reaches 
maximum monitor output over “Good” level. 
Note>>
•  Do not press the tamper when you set the 
DIP switches. Otherwise the settings will not 
actually be changed.
Note>>
•  The operation of the Alarm/Level indicator LED will not 
change due to the battery saving timer setting. Whenever 
the beam is interrupted, the indicator will turn ON.
Note>>
•  Route the cables 
through the center 
hole.
Turn the horizontal 
alignment dial by fingers 
to make alignment
Turn the vertical 
alignment dial with a 
screwdriver to make 
alignment 
When connecting to BCU-5 (OPTION)
Receiver
Red
Black
Main unit Back box
Power
Main control
Alarm
EX EX – +
Battery
plate
Low battery
–
+
+
–
Wireless
Transmitter
Ta mp e r
BCU-5
Battery
plate
BCU-5
Transmitter
Red
Black
Main unit
Blue
Green
Power
Main control 
EX EX – +
–+
–+
Low battery
Back box
Wireless
Transmitter
Receiver
Red
Black
Main unit
Yellow
Orange
Brown
Green
Blue
Purple
Gray
Yellow
Orange
Brown
Green
Blue
Purple
Gray
Main control
Power
Alarm
COM
Low battery
Tamper
NC
NO
Wireless
Transmitter
Back box
Transmitter
Red
Black
Main unit
Green
Blue
Main control
Power 
Low battery
Wireless
Transmitter
Back box
When connecting to PCU-5 (OPTION)
4-1
FUNCTIONS
Receiver
ON
1
DIP SWITCH
SL-TNR
SELECTOR
POSITION
Battery saving timer switch 
Beam interruption adjustment switch 1 
Intermittent output function switch 
Beam interruption adjustment switch 2 
Caution
Receiver
BEAM INTERRUPTION ADJUSTMENT
2
BATTERY SAVING TIMER
3
INTERMITTENT OUTPUT FUNCTION
4
(50 msec) (100 msec) (250 msec) (500 msec)
Typical 
interruption 
time setting
SELECTOR
POSITION
Running Jogging Walking Slow movement
SL-TNR
ON
SL-TNR
ON
OFF
Receiver
SL-TNR
ON
OFF
Transmitter Receiver
[ Top view ]
ex) SL-200TNR 60m/200ft. 30m/100ft.
5°
5°
90°
90°
Viewfinder
OPERATION CHECK
5
5-1
LED INDICATION
Beam Interruption
OFF
LEDDETECTOR
Receiver
Alarm/Level indicator LED (Receiver only)
Alarm/Level 
indicator
LED
ON 
(continue)
OFF
Beam not 
received sufficiently
or
Normal
Receiver is 
low battery
Transmitter is 
low battery
Both Receiver 
and Transmitter 
are low battery
LED
BATTERY 
CONDITION
Power/Low battery indicator LED
ON (continue)
• • •
• • •
• • •
• • •
• • •
Power/Low 
battery indicator
LED
Normal
Receiver is 
low battery
Transmitter is 
low battery
Both Receiver 
and Transmitter 
are low battery
LED
BATTERY 
CONDITION
ON (continue)
ON (continue)
Transmitter
The battery saving timer enforces 2 min intervals 
between alarm outputs. If the site of security 
involves a lot of traffic or in/out of people over a 
detection zone, wireless transmitters may wear 
out batteries quickly. The battery saving timer 
cancels alarms for two minutes after the initial 
output, preserving powers of wireless transmitters. 
Initial setting is at 50 ms for normal 
work. According to the speed of a 
supposed target you select one 
specific setting out of 4 steps.
Set the beam interruption 
adjustment switches of the 
Receiver according to the speed of 
the human object to detect.
Intermittent output function enforces outputs to reset while beams 
continues to be interrupted. 
This function is effective if your wireless transmitters do not have 
supervised features to monitor relay status. 
Intermittent output function repeats alarms with intervals to let the 
system be aware of interrupted status. 
•  Remove all batteries prior 
to replacing with new 
ones. If this is not 
followed, the low battery 
indicator LED will not reset 
and continue to blink.
• Alarm output: 
1 output/ 2 minutes
• A
larm output: 1 output/ 1 minute
Left eye
Right eye
From right side
From left side
Alarm/Level 
Indicator
LED
Power/Low battery
indicator LED
Through the 
center hole.
Through the 
center hole.


