Looking for a PIR (or similar wireless) driveway alarm

horseflesh · 2016-04-16T19:48:43+00:00

I'm currently using a Dakota Alert PIR sensor to get a chime indoors when a car or person comes down my driveways or across the lawn in between the driveways. Unfortunately, it hasn't been very reliable. It's prone to false positives in the brighter months even though light never falls on the sensor itself. Worse, it sometimes just misses seeing a car. Can anyone recommend a similar product that is more reliable? My goals are these: - Wireless sensor that will detect any person or vehicle crossing the lines indicated in the picture below - Sensor range is at least 60 feet, with high reliability - Minimize false positives - Sensors run on batteries, not AC - Sensor trip triggers a sound indoors at some kind of base station - Multiple 'channels' or some other means to generate different sounds for the two driveways - Ideally, base station includes a contact closure so I can hook up the alarm to my NVR, etc. Any products to recommend? The Dakota Alert stuff that I have meets all these requirements except it just is not very reliable. Click to embiggen: (If only there was a way to get a Hik NVR to play different alarm sounds... I might be able to replace all this with line-crossing alarms.)