DMP Electronics 1125 Installation Sheet
INSTALLATION SHEET
1125 PIR Motion Detector
Description
The 1125 PIR (Passive Infrared) Motion Detector is a wireless, low current sensor for use with the 1100D Wireless
Receiver. Using mirrored optic technology the 1125 PIR is highly immune to multiple false alarm sources. In addition
to switch-selectable sensitivity and range adjustment, you can use masking to modify coverage patterns for various
applications.
Parts Included
• One PIR detector
• Three 3V lithium CR-123A batteries
• Two plastic masks
• One screw to secure the unit to the wall mounting bracket
• One wall-mounting bracket
• One sheet of adhesive masking labels
• One cardboard undercrawl window mask
For your convenience, two additional pre-printed serial number
labels are included. Verify the serial numbers on the labels match
the serial number located on the back of the device housing. Prior
to installing the device, record the serial number located on the
back of the device housing or place one of the pre-printed serial
number labels on the panel programming sheet. This number is
required during programming.
Figure 1: 1125 PIR Exploded View
Selecting a Location
Mount the unit:
• On a rigid vibration-free surface
• 6 to 10 feet (1.8 to 3m) high, but at least 6 inches (15cm) from the ceiling
• So the expected intruder movement is across the detection pattern elds, see Figure 2
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 eld of view or strong air drafts (fans, air conditioner, etc.)
• Where the ambient temperature is below 32° F (0°C) or above 131°F (55°C)
Figure 2: Detection Pattern
FIELD TEST VERSION 7/28/2004
1125 PIR Installation Sheet Digital Monitoring Products
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Selecting the Coverage Pattern
The unit coverage pattern can be modied to t specic applications by masking mirror curtains. Mask curtains to
avoid sources of false alarms, such as heaters, air conditioners, and windows. Open the unit by pushing the opening
tab up. If necessary, use one or more of the following methods to modify the coverage pattern.
Using the plastic masks
Use one or both of the plastic masks provided to mask off large coverage areas as shown in Figure 3.
Figure 3: Plastic Masks
Using the adhesive labels
Mask the appropriate mirror curtains with the provided adhesive labels. See the example shown in Figure 4. Do not
use sharp objects to remove unwanted labels. If necessary, carefully peel off the label.
Using the cardboard masks
Use the cardboard undercrawl window mask as shown in Figure 5. The undercrawl mask allows objects to be placed
within 5 feet of, or directly below, the detector. When not using the mask as described here or in the Pet Alley
conguration, remove the mask completely.
Digital Monitoring Products 1125 PIR Installation Sheet
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Figure 4: Adhesive Labels
Figure 5: Cardboard Masks
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