11
Troubleshooting Guide
If your Wireless Vehicle Sensor is not operating properly, please follow this checklist:
IMPORTANT: If you make any of the following adjustments, you will need to recalibrate the
Transmitter Module before retesting (see page 10, Test the System).
A. IF THE GATE IS NOT OPENING:
1. Check the batteries:
a. Verify batteries are installed correctly (align the “+” signs on the battery and in the battery compartment).
b. Verify batteries are working. Remove and reinstall the batteries. The Transmit Indicator on the Transmitter
Module should blink for 30 seconds. If not, try installing a new pair of “AA” batteries.
NOTE: When reinstalling batteries, the system will need to recalibrate (page 10, Test the System).
Do not move any metal objects or the Transmitter Module for 60 seconds after reinstalling batteries.
2. Verify that the Sensor Cable is connected to the base of the Transmitter Module.
3. Increase the Sensitivity Adjustment on the Transmitter Module (page 10,
Test the System
, step 3).
4. Verify that you have properly placed the Transmitter Module. Be sure it is installed:
• on the same side of the driveway as the gate opener/receiver.
• within 100 ft. and “line of sight” of the gate opener/receiver.
• 12 in. above ground level.
5. Verify that the Sensor is not more than 2 ft. from—and parallel to—the driveway edge.
6. If the Receiver was installed:
a. Repeat the “learn” process (page 8).
b. Verify that the Receiver is correctly wired to the gate opener control board (page 10)
7. If the Receiver was NOT installed:
a. Verify that the Transmitter Module DIP Switch settings were adjusted to match the Entry Transmitter’s DIP
b. Verify that the Entry Transmitter opens the gate. If not, you will need to program the Entry Transmitter’s
settings into the gate opener receiver (see your gate opener Installation Manual), and then match the
Transmitter Module’s DIP Switch settings with the Entry Transmitter.
(For MM371W, MM372W, MM571W, MM572W, TS571W, MM271, MM272 and HD272) Verify that the
Receiver was paired correctly to the gate opener (page 7).
B. IF THE GATE IS OPENING RANDOMLY:
1. Verify that the Sensor is at least 25 ft. from the roadway and/or neighbors’ driveways.
2. Verify that there are no moving metal objects within a 25 ft. radius of the Sensor. (NOTE: in areas with high
winds, metal objects such as flag poles/swing sets can trigger the Sensor if they are within range.)
3. Do not put Sensor Cable in PVC conduit along with other AC or control wires.
4. Adjust the Sensitivity on the Transmitter Module (page 10,
Test the System
, step 3).
5. Recalibrate unit by removing and reinstalling the batteries. Allow 60 seconds for calibration
Test the System
).
If you are unable to solve the problem, call the NSC Technical Support Department at 1-800-543-1236.
