DMP Electronics 1127C Installation Manual Download Page 3

1127C INSTALLATION GUIDE     |     DIGITAL MONITORING PRODUCTS 

3

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

5

TEST THE DETECTOR

Walk Test

1.  From the Walk Test menu of the panel, select the PIR Walk Test to place the PIR in walk test mode 

(enabling the LED) for 30 minutes. After 30 minutes, the Walk Test automatically exits and the PIR returns 

to normal.  

Any 1127C PIR Transmitters that have 

DISARM DISABLE

 set to 

YES

 are temporarily enabled when the Walk 

Test is selected. Upon completion of Walk Test, the transmitter is disabled again.

2.  After entering the walk test mode, thoroughly test the installation to insure proper protection pattern of the 

installed units. The walk test is a local test only and no results are sent to the Central Station.

Transmission Test

1.  After programming the unit, close the cover to restore the tamper switch.
2.  Verify that the keypad display indicates a signal received from the detector.

ADDITIONAL INFORMATION

Battery Life Expectancy

Typical battery life expectancy for a DMP Model 1127C Wireless PIR is five years, based on 300 trips per day. Battery life can 

be increased 40% to seven years by programming the Disarm Disable feature as 

YES

. DMP wireless equipment uses two-way 

communication to extend battery life.
The following situation can extend battery life expectancy:

•  Enabling the Disarm Disable feature in Zone Programming allows the PIR to be disabled while the area is disarmed. This 

eliminates frequent motion from being detected in a high traffic area during the disarmed period.

•  Extend transmitter supervision time in panel programming.

The following situations can reduce battery life expectancy:

•  If a receiver is unplugged 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.

•  Programming the Disarm Disable feature as 

NO

 where frequent transmissions, in areas of high traffic, cause messages 

to be sent every time movement is detected.

•  When installed in extreme hot or cold environments.

Maintenance

When installed and used properly, the unit provides years of service with minimal maintenance. To ensure proper operation, 

perform unit testing annually as described. 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.

Mounting Outside

The temperature range for mounting outside is 32 - 120 ° F with a humidity at 85% at 86 ° F.

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 3:  Remove the Cover 

Cover Lock Screw

a

b

Tamper 

Corner Mount Holes

Wall Mount Holes

c

d

a

b

c

d

c

d

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