2
1127W INSTALLATION GUIDE | DIGITAL MONITORING PRODUCTS
MOUNT THE DETECTOR
Caution:
You must be free of static electricity before handling sensor circuit boards. Touch a grounded, bare
metal surface before touching circuit boards or wear a grounding strap.
4
3
Locate the Unit:
• On a rigid vibration-free surface
• Where the expected intruder movement is across the
detection pattern
Do Not Locate the Unit:
• On a surface exposed to moisture
• In any area containing excessive metallic surfaces
• Where it may be exposed to false alarm sources such as:
direct sunlight, heat sources (heater, radiators, etc.) in the
field of view or strong air drafts (fans, air conditioner, etc.)
LED Survey Operation
The PIR transmitter provides a survey capability to allow one
person to confirm communication with the receiver while the cover
is removed. This allows you to easily determine the best location for
the 1127W.
1. Hold the 1127W in the exact desired location.
2. Press the tamper switch to send data to the receiver and
determine if communication is confirmed or faulty. See
Figure 2 for tamper switch location.
SELECT A LOCATION
Figure 3: Remove the Cover
Cover Lock Screw
a
b
Tamper
Corner Mount Holes
Wall Mount Holes
c
d
a
b
c
d
c
d
When mounting the detector, refer to Figure 3.
1. Remove the front cover from the
detector.
2. Remove the batteries and the PCB from
the back cover to expose mounting holes.
Use your thumbs to push on the battery
case to slide the PCB toward the top of
the back cover and lift out.
3. Select the appropriate mounting holes
on the back cover for either corner or flat
wall mounting.
4. With the Cover Lock Screw toward the
bottom, attach the back cover to the
wall, up to 8’ high, using screws and wall
anchors, do not over-tighten.
5. Reinstall the PCB in the back cover in the
reverse order of Step 2.
6. Reinstall the batteries and front cover.
Figure 2: Detection Pattern
84˚
Top View
Side View
8.0’ (2.4m)
0
10’
20’
30’
36’
(5m)
(10m)(11m)
65
˚
32
˚
14
˚
7˚
Confirmed:
If communication is confirmed, the survey LED under the board turns on when data is
sent to the receiver and off when acknowledgement is received. To view this survey LED, turn the
1127W sideways. Repeat this test to confirm five separate consecutive LED blinks. Any indication
otherwise means proper communication has not been established.
Faulty:
If communication is faulty, the LED remains on for about 8 seconds or flashes multiple times
in quick succession. Relocate the 1127W or receiver until the LED confirms clear communication.
