Installation Guide

2 D-307788 MP-843/XHM2
6. Behind partitions or objects
7. On unstable surfaces
Warning: Do not obscure partially or completely the detector’s field
of view.
Figure 2: General installation guidance
Mounting the MP-843/XHM2
1. To remove the bracket, turn the detector so that the flat side is
facedown and the detector spine is faceup. Press the spine
below the snap and slide off the cover. See Figure 3.
2. Mount the bracket on the wall with screws. To mount the
bracket in a corner, use either hole set A1 or hole set A2. To
mount the bracket on a flat surface or hole set B. See Figure 4.
3. Activate the detector with one of the following options:
• If batteries are already installed, pull the activation tab that
protrudes from the battery compartment. See Figure 5.
• If there are no batteries, insert new ones with the correct
polarity. For more information, see Inserting or replacing
the batteries.
4. To mount the detector on the bracket, align the groove of the
detector with the rail of the bracket and slide the detector
downward until you hear a click.
5. When the unit is mounted in its final location and ready for the
walk test, remove the protective film on the front of the unit.
Replacing the batteries
1. Press upward to slide off the detector from the bracket. See
Figure 7.
2. Optional: Remove the batteries and wait for 1 minute.
Note: Dispose of used batteries according to the manufacturer's
instructions.
3. Insert the new batteries.
Caution! Risk of explosion if battery is replaced with an
incorrect type. For more information, see Batteries in
Specifications.
4. To mount the detector on the bracket, slide it downward until
you hear a click.
Figure 7: Replacing the batteries
Pairing the detector and the panel
Pair the detector and control panel before you install the detector.
Note: For UL listed installations, only use the device with UL listed
control panels.
1. Set the panel to pairing mode. For more information, refer to
the panel user guide.
2. Set the detector to pairing mode.
3. To activate the detector, pull the activation strip that protrudes
from the battery compartment. See Figure 5.
4. Verify that the detector is searching for the panel: the green LED
blinks 3 times every 5 seconds and continues to blink for up to 1
minute.
Note: If you press the tamper switch or trip the motion
detector, the search process fails and restarts.
5. Complete the pairing procedure on the touchscreen control
panel. For more information, refer to the panel’s installation
guide.
6. On the panel screen, ensure that the Received Signal Strength
Indicator (RSSI) is stronger than -70dBm and the Link Quality
Indicator (LQI) is stronger than 250. If the RSSI and LQI values
do not meet the minimum required values, change the location
of the detector until they do.
Rebooting the detector
1. Remove the detector from the bracket. For more information,
see step 1 in Mounting the detector.
2. Press and hold the tamper switch for 2 seconds. For more
information on the tamper switch, see Figure 1.
3. Close the battery cover. For more information, see step 4 in
Mounting the detector.
Resetting the detector to default mode
If you reset the detector to default mode, the device disconnects from
the network and is ready to pair with the panel.
1. Remove the detector from the bracket. For more information,
see step 1 in Mounting the detector.
2. Press and hold the tamper switch. For more information on the
Figure 3: Opening the unit
Figure 4: Bracket mounting
Figure 5: Remov ing the
activation tab
Figure 6: Mounting detector on
bracket