Digital Monitoring Products
1121 PIR Installation Sheet
2
1121 PIR Installation Sheet
Digital Monitoring Products
3
Mounting Location Considerations
Mount the unit:
• On a rigid vibration-free surface
• So the expected intruder movement is across the detection
pattern fields, see Figure 2
Do not locate the unit:
• Facing a door with a wireless door/window transmitter
• Facing areas that may change temperature rapidly
• 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.)
Setting the Sensitivity and Range Switches
Use the switches located on the unit PCB to set sensitivity and
pet immunity, as shown in Figure 3. Use the following to determine the
appropriate switch settings for an application.
Pulse Width Sensitivity Adjustment
Position 1
is for normal operating conditions and operation.
Position AUTO
is used for harsh environment locations with air drafts.
Pet Immunity Adjustment
Position 33 lbs
is for locations with pets up to 33 lbs in weight.
Position 60 lbs
is used for locations with pets between 33 lbs and up to
60 lbs in weight.
Unit Testing
The test pushbutton is located below the tamper switch. Use this button
to activate the detector Walk Test and RF transmission test modes.
Perform the steps following each test option to verify operation. Refer
to Figure 3 to identify the test pushbutton location. Before performing
any of the tests, ensure the 1121 PIR is currently programmed in the
Command Processor™ panel.
Walk Test
1. Lift the unit front cover.
2. Press the test pushbutton for less than one second. This activates the device for one minute to enable the
Walk Test.
3. Walk test the unit to verify the PIR coverage. Refer to Selecting the Best Location (LED Survey Operation) as
needed.
Note
: This is for IR detection only and does not send an RF transmission.
Alarm Transmission Test
1. Lift the unit front cover.
2. Press the test pushbutton for at least two seconds. This immediately activates the alarm transmission.
3. To check this function, verify that the keypad display indicates a signal received from the detector. The
detector sends 11 transmissions to the control panel during the one minute test period.
Tamper Transmission Test
1. Lift the unit front cover to fault the tamper and initiate a tamper trouble message.
2. Verify that the keypad display indicates a tamper message.
Mounting the Unit
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.
Prior to permanently mounting the 1121 PIR, check that the PIR and control panel communication is working. See
the Unit Testing section.
1. Use a Phillips head screwdriver to unscrew the holding screw at the lower end of the 1121 case, gently raise
the front cover, and slide the cover out of the closing pins. Refer to Figure 1.
Figure 3: 1121 PIR Circuit Layout
+
–
+
+
+
+
+
AUTO
1
33 Lb
60 Lb
PET
PULSE
Q1
DMP WIRELESS PIR
P/N 3201504
Tamper
Test
Pushbutton
Pulse Width
Switch
Pyrosensor
Battery
Pet Immunity
Switch
D1 LED
(Survey)
Mounting
Screw
Figure 2: Detection Pattern
50 feet
