1. Batteries. Most problems reported with wireless driveway alarms are battery related. 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. Wildlife. With all Infrared sensors large animals or even smaller animals and birds in the right place can set them off. Try moving the sensor to a different location, opposite side of the driveway or aim it in a slightly different angle. If it continues to false alarm and you suspect the sensor is defective try temporarily moving it to a closet or cupboard to determine if it is still triggering – if it triggers in a dark closet it is definitely defective! Please call us for an RMA. If no triggers are received from the closet try placing it back on the driveway and adjust the sensor sensitivity as shown in the manual. Sometimes the low battery alarm is mistaken for a false trigger. When the battery needs replacing the sensor will send repetitive triggers spaced about 30 seconds apart after a visitor has entered.
3. Movement. Be sure that the sensor is mounted securely on a solid post or tree.
4. Vegetation. All infrared sensors can be triggered by sunlight reflecting off of moving leaves. This isn’t a common problem and can normally be solved by trimming the leaves or moving the sensor.
5. 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.