I like this sensor. it works very well. MY problem is getting the timing and sensitivity to the desired level. Now a note: I wish Amazon had a multiple rating system or sections to rate this product. I only took off that fifth star because the two settings are a bit finicky. I would have liked a larger adjustment range for my application. an example might be in 5 second increments of hash marks for on-time, and for sensitivity it might be meters/feet or some other value. You don't even have to place this on the circuit board, but in the drawings themselves. so you can adapt it to your needs faster. So it's more my problem than hers. The senor itself is tiny. shall we say no more than a wooden box of matches or a Zippo-style lighter. The sensor was used indoors in a closed, semi-open space known as my garage. I also wish the wires were a little longer, but that's just for my guinea pig. . ;-) The idea would be to center the sensor in space so if you have multiple inputs you can mount it farther from where it was triggered from each direction. but maybe i have a workaround for that too. The company I bought from emailed me with a better diagram of the inside of the sensor. I liked it. They took the time to speak to post this with an updated image/diagram. they get five stars.
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