Dakota Alert 3000 Wireless Vehicle Detection PIR Motion Sensor
This is my second wireless transmitter from Dakota Alert, the first one functioned satisfactorily for about 18 months before it died. The replacement unit I purchased this summer works one day and not the next. More often than not it will sense a person walking past only to miss the SUV ten minutes later!<br />The transmitter is in direct line of sight with the receiver at about 70ft apart. A second transmitter, located on the back, has performed flawlessly for the past 2 years.