I am currently using 5 sensors (4 from one pack and one from another pack). A sensor triggers "accidentally". I've moved it several times (just in case) but it still turns off "Randomly". The other four sensors are reliable. The biggest problem I've encountered isn't the manufacturer's fault (sort of). If you only run it on batteries they won't last very long and will end up using LOTS of batteries (I use the best - Duracell alkaline batteries). So I tried to connect the device with a cable, but. I lost my plug and it's not a "standard plug". I'm currently trying to find one that 'fits' but so far with no luck. So if anyone is reading this and knows "fork size" please post. I am satisfied with the product. I'm in the business and have them in various locations for detecting "traffic flows" - and have found them almost invaluable. Too bad I didn't install it a long time ago. Update 01/21/2021: still happy. Of course. I wish it was a little more "customizable" but overall; The range is better than expected and they've been consistently reliable (so far).
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