1. Batteries. Most problems reported with wireless driveway alarms are battery associated. The MURS transmitter uses six AA batteries which provide a total of 9 volts to the transmitter.
You can prove the battery quality and interconnections by measuring the total voltage on the red and black wires leaving the battery pack – it should be no less then 8.5 volts.
Please use good quality alkaline batteries.

2. Probe and Cable. Check that the red and black probe wires are snug under the wire screws of the MURS processor board. It is recommended to remove these wires, clean or re-strip them and snug them back under the screws.
Check the probe and length of wire from the probe for any signs of damage (nicks etc.). If any moisture gets in the wire it can also trigger false alarms. If there is a nick you can easily fix it with one of our burial splice kits.

3. Movement. Be sure that the probe is either buried or prevented from moving. If it is left on the ground the smallest vibration can cause a false alarm. If it is a temporary installation place a bag of sand or gravel on top of the probe to keep it stationary.

4. Distant transmissions. The MURS systems are very high powered so it is possible that a neighbor (even miles away) has the same system that you are receiving transmissions from. Simply change the channel to prevent this.

5. Distant traffic. All magnetic vehicle sensors are more sensitive to large vehicles moving quickly. It is possible to detect a heavy transport truck moving at 60 MPH as far away as 75’ or a train at 200’. Keep this in mind when choosing the probe location.