UTC Fire & Security Americas Corporation Inc 786A-DTIM User Manual

If there is no dial tone at on-site phones after wiring the RJ-31X jack, use the following to find the 
cause.

•

Wait 2 minutes and try again. The DTIM may be busy trying to report to the central station.

•

Check the DB-8 cord connections at the module and RJ-31X jack. Replace the cord if neces-
sary.

•

Disconnect the DB-8 cord from the RJ-31X jack. If the phone still doesn’t work, the problem 
is in the RJ-31X jack wiring. Check the RJ-31X jack wiring and TELCO block wiring. 
Replace the RJ-31X jack if necessary.

•

Perform a phone test after troubleshooting the phone line 

(see your panel installation instructions 

for phone test procedures).

•

If a constant dial tone prevents you from using the phone, there may be one or more 

polarity-

sensitive phones on the premises. Reverse the phone wires connected to the brown and gray wire 
terminals on the RJ-31X jack.

If the system does not respond in sensor test (as described in the panel installation instructions), 
try the following:

•

Change the antenna position. Best range is achieved by inserting the antenna into the wall.

•

Check that the DTIM battery is installed.

•

Check the DTIM for a dead battery. Replace the battery if necessary.

•

Use an RF Sniffer (60-401) to verify that the DTIM is transmitting.

•

Verify that the DTIM was added (learned) into panel memory correctly.

•

The tamper switch may have been tripped. Check that the cover is securely in place.

•

The DTIM battery may be low. Check the battery, replace if necessary and conduct a phone 
test.

•

If the panel indicates a DTIM supervisory condition, use an RF Sniffer (60-401) to verify that 
the DTIM transmits when the tamper switch is pressed. If it does not transmit, check the bat-
tery and replace it if necessary.

•

If the sniffer indicates that the DTIM is transmitting, it may be out of panel receiving range. 
Use the sensor test to verify that the DTIM is within panel range. If necessary, test the DTIM 
from other locations until an acceptable location is found.

Compatibility: .............. Allegro

™

Wireless Range ............. 500 feet open-air (nominal)

Power Source:  .............. 3.6 V AA Lithium Battery

Storage Temperature: .... -30° F to 140° F (-34° C to 60° C)

Operating Temperature: 32° F to 120° F(0° C to 49° C)

Maximum Humidity:  ... 90% relative humidity, noncondensing

Dimensions: 4.6” (12 cm) W, 6.6” (3 cm) H, 1.20” (17 cm) D

US Patents 4,855,713 and 4,864,636