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INSTALLATION SHEET
1121 PIR Motion Detector
Description
The 1121 PIR (Passive Infrared) Motion Detector is a wireless, low current sensor for use with the 1100D Wireless
Receiver. The 1121 PIR can be used in a variety of motion detector applications. With a built-in tamper switch,
switch-selectable high/low sensitivity and pet immunity, the 1121 is very exible. For added convenience, the 1121
is designed to mount on the wall or the ceiling.
Features
• Low current technology
• Low battery report capability
• Walk test for coverage and signals
• Calibration free height installation from 4.9 to 8.2 feet high
• Pet immunity up to 60 lbs.
What is Included
• One PIR detector with DMP wireless transmitter
• One CR123 battery
• Zone name and number label
• Serial number label
• One optional wall/ceiling-mounting bracket with hardware
Figure 1: Remove the 1121 Cover
Unscrew the
holding screw
and gently lift
the cover.
Installation
For your convenience, an additional pre-printed serial number label is included. Verify the serial number on the
label matches the serial number located on the side of the battery compartment. See Figure 3. Prior to installing
the device, record the serial number or place the pre-printed serial number label on the panel programming sheet.
This number is required during programming. As needed, use the zone name and number label to identify a specic
transmitter.
Programming the PIR in the Panel
Refer to the XRSuper6/XR20/XR40 Programming Guide (LT-0305) as needed. Program the device as a zone in Zone
Information during panel programming. At the Serial Number: prompt, enter the eight-digit serial number, including
leading zeros. Continue to program the zone as directed in the panel programming guide.
Note: When a receiver is installed, powered up, or the panel is reset, the supervision time for transmitters is reset.
If the receiver has been powered down for more than one hour, wireless transmitters may take up to an additional
hour to send a supervision message unless tripped, tampered, or powered up. This operation extends battery life for
transmitters. A missing message may display on the keypad until the transmitter sends a supervision message.
Selecting the Best Location (LED Survey Operation)
The PIR transmitter provides a survey capability to allow one person to conrm transmitter communication with
the receiver while the cover is removed. Refer to Figure 1 to remove the PIR front cover. The PIR transmitter
PCB Red Survey LED turns on whenever data is sent to the receiver then immediately turns off when the receiver
acknowledgement is received. Pressing the PIR tamper switch is a convenient way to send data to the receiver to
conrm operation. The PIR circuit board LED lights to indicate motion and the Survey LED briey lights to conrm
operation. See Figure 3 for LED locations. See Installing or Replacing Batteries.
When the transmitter does not receive an acknowledgement from the receiver, the transmitter Survey LED remains
on for about 8 seconds to let you know communication is not established. Relocate the transmitter or receiver until
the Survey LED immediately turns off indicating the transmitter and receiver are communicating properly. If the
transmitter is not programmed into the panel, it does not operate properly.
FCC Note: The antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm
from all persons. It must not be co-located or operated in conjunction with any other antenna or transmitter.
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1121 PIR Installation Sheet Digital Monitoring Products
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Mounting Location Considerations
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AUTO 1 33 Lb 60 Lb
PETPULSE
Q1
DMP WIRELESS PIR
P/N 3201504
Tamper
Te
st
Pushbutton
Pulse Width
Switch
Pyrosensor
Battery
Pet Immunity
Switch
D1 LED
(Survey)
Mounting
Screw
Mount the unit:
• On a rigid vibration-free surface
• So the expected intruder movement is across the detection
pattern elds, 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
eld of view or strong air drafts (fans, air conditioner, etc.)
50 feet
Setting the Sensitivity and Range Switches
Figure 2: Detection Pattern
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.
Figure 3: 1121 PIR Circuit Layout
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.
Digital Monitoring Products 1121 PIR Installation Sheet
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2. Use a Phillips head screwdriver to loosen the mounting screw
located on the PIR printed circuit board (PCB) and slide the PCB
out of the unit. See Figure 3 for the mounting screw location.
3. Select and open the appropriate knockout mounting holes on the
mounting bracket for the best mounting location. See Figure 4.
4. Use screws and wall anchors, if necessary, to mount the detector
base to the wall in a corner.
5. Reinstall the PCB back into the unit. Tighten the PCB mounting
screw to secure it into place. Do not overtighten.
6. Install the battery. See Installing or Replacing Batteries later in
this document.
7. Insert the cover back into the appropriate closing pins and tighten
the holding screw back into place.
A A
D
A
B B
C C
C C
B B
A. Not in use.
B. Use for at wall
mounting.
C. Corner mounting -
use all four holes.
Sharp left or right
angle mounting use one top hole
and one bottom
hole.
D. For bracket
mounting.
Optional Bracket Mounting
The 1121 PIR can optionally be attached to a mounting bracket. The
Figure 4: Knockout Hole Locations
bracket can be mounted to the ceiling or a wall location. Refer to Mounting the Unit, Figure 1 and Figure 5 as
needed.
1. Open the PIR and remove the battery and PCB.
2. Open the required bracket mounting knockout holes.
3. Reinstall the PCB and the battery.
4. Install the bracket on the wall or ceiling using the included screws.
5. Slide the assembled 1121 PIR onto the mounting bracket.
Bracket
Installation
Wall Mount Installation
Ceiling Mount Installation
Figure 5: Optional Bracket Mounting
Installing or Replacing Batteries
Note: If the battery reaches the factory preset low level, a Low Battery signal is sent to the panel. The 1121 PIR
remains operational for approximately 30 days to allow adequate time to replace the battery.
Observe polarity when installing the battery. Use only 3.0V lithium batteries, DMP Model CR123, or the equivalent
battery from a local retail outlet.
Note: When setting up a wireless system, it is recommended to program zones and connect the receiver before
installing batteries in the transmitters.
1. If necessary, remove the unit from the wall mounting bracket. See Optional Bracket Mounting or Mounting the
Unit.
2. Remove the front cover. See Figure 1.
3. Remove the battery (if installed) before installing a new battery.
Caution: Risk of re, explosion, and burns. Do not recharge, disassemble, heat above 212°F (100°C), or
incinerate. Properly dispose of unused batteries.
4. Observe polarity and insert the lithium battery into the battery holder where indicated in Figure 3.
1121 PIR Installation Sheet Digital Monitoring Products
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Battery Life Expectancy
Typical battery life expectancy for DMP Model 1121 wireless PIR is three years. DMP wireless equipment uses
two-way communication to extend battery life.
The following situations can reduce battery life expectancy:
• If a receiver is unplugged, too far away, or not installed.
Note: Transmitters continue to send supervision messages until a receiver returns an acknowledgement.
After an hour the transmitter only attempts a supervision message every 60 minutes.
• Frequent transmissions, such as constant motion where messages are sent every time the movement is
detected.
Note: To compensate for frequent motion, the 1121 PIR automatically rests until no motion is detected for
two minutes. After two minutes of no activity, the 1121 PIR is ready to respond to any motion detected.
Because of this operation, do not program a wireless PIR for cross zone operation unless other zones are also
programmed to provide cross zone operation.
• When installed in extreme hot or cold environments.
The following situation can extend battery life expectancy:
• Extend transmitter supervision time in panel programming.
• Infrequent transmission trips, such as a low trafc area where messages are rarely sent.
Maintenance
When installed and used properly, the unit provides years of service with minimal maintenance. To ensure proper
operation, you should perform unit testing annually as described above. Clean the cover and optional bracket with a
water dampened cloth as needed to keep it free of dust and dirt. Always test the unit after cleaning.
FCC Information
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modications made by the user and not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Specications
Battery
Life Expectancy 3 years (normal operation)
Type 3.0V Lithium CR-123
See Battery Life Expectancy for details.
Transmit condition Alarm, Low Battery
Detection
Range 90° 50 x 50 feet
Speed 1 to 5 feet/second
Mounting height 4.9 to 8.2 feet
Dimensions 4.8” H X 2.5” W X 1.45” D
Color White
800- 641- 4282
www.dmp .com
Made in the USA
Patents
Patent(s) Pending
Listings and Approvals
FCC Part 15 Registration ID CCKPC0088
INTR USIO N • FIRE • ACC E SS • NET WORK S
2500 Nor th Par t ners hip Boul evar d
Spri ngfi eld, Mis sour i 65 8 03- 8 877
LT-0699 (3/05) © 2005 Digital Monitoring Products, Inc.
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