DT900AM Series DUAL TEC
and Light Industrial Applications—Installation Instructions
Select mounting height.
30 cm (12") minimum
Mounting Location Guidelines
• Avoid direct or reflected sunlight
• Aim sensor away from windows, heating/
cooling devices or large moving objects.
• Sensor must have a clear line-of-sight to
Locate correct sensor range scale
and rotate Vertical Adjustment Screw
until the diamond corresponds to the
sensor mounting height (coarse
NOTE: Fine adjust may be needed during
walk-test. (See Troubleshooting section.)
Unfasten screws and remove mount-
ing plate from sensor. If required,
remove the knockout to allow wire
entry via electric metallic tubing or
surface wiring conduit.
Hang the sensor on the mounting
plate hooks and fasten with the two
mounting plate screws.
with tie wraps.
Tighten horizontal locking screw in
sensor support base.
For fine horizontal adjustment, loosen
the PIR horizontal fine locking screw
on the PCB.
Carefully push screwdriver into slots
to disengage latches and open top
Set switch S3 to establish the
sensitivity best suited to your appli-
HIGH (Pulse Count 1)
NORMAL (Pulse Count 2)
LOW (Pulse Count 3)
*Factory default setting; recommended setting
for DT906AM. **Not connected.
Attach mounting plate to wall at
desired height, using four screws
0.8 - 1.5 mm
Apply power to the sensor, and all
the LED's will start flashing rapidly.
Wait 90 seconds for the power-up
self-test to finish, at which point, if
there is no motion in the detection
area, all the LED's will be off, and the
sensor will be ready for walk testing.
If the three LED's do not go off after
90 seconds, refer to the Trouble-
Rotate the horizontal fine adjust knob
to the desired position.
NOTE: Fine adjustment allows for small
changes (3 degrees right or left) between
Motion Sensor for Commercial
DT906AM ONLY: Firmly insert
screwdriver into slot in arrow and
rotate PIR Mirror Selector to the
mode with switch
S2, if desired. (See INFORMER Mode
*Factory default setting (not connected).
Install M5 (#10) screw (not supplied)
in wall 1.9 cm (3/4") below mounting
screw, as shown, for tamper activa-
1.9 cm (3/4")
Loosen horizontal locking screw in
sensor support base.
Turn the microwave potentiometer
counterclockwise to decrease the
microwave range to minimum.
During walk-test, gradually turn the
potentiometer clockwise increasing
microwave sensitivity until the
desired range is obtained.
Tighten the horizontal fine locking
screw on the PCB.
Set switch S4 to establish microwave
DT906AM 61 m (200')
DT906AM 37 m (120') CLOSED
DT900AM 24.4 m (80') OPEN*
15 m (50')
*Factory default setting.
Carefully push screwdriver into slot
to disengage latch and remove
Pull about 30 cm (12") of wire from
wall through the opening in the
mounting plate and route wire to the
Grasp housing and rotate it to the
desired position (coarse adjust). If
fine adjust is needed see Steps 21-
NOTE: Reference marks = 5° change.
Walk-test the sensor to check for
adequate detection coverage and to
verify the sensor is fully functional.
Depending on the selected sensitiv-
ity level, the sensor will alarm after
taking between 2 and 4 steps in the
NOTE: If an on-going trouble, mask or
INFORMER condition occurs, the LEDs will
display a pattern that identifies the trouble.
(See the Troubleshooting section).
Remove the jumper at J4 on the PCB
to disable the LEDs after walk-
testing, and complete installation by
closing the top cover and replacing
the bottom cover.