Sensky BS010W 12v 24v 3a Pir Motion Sensor Long Distance Time Adjustable Small motion senser switch

Works as advertised with a adjustable delay up to 5 minutes. Perfect for kitchen under cabinet LED lights or other accent lighting.

To provide more lighting in our kitchen, we installed LED strip lights around the bottom of our upper cabinets. By adding this sensor, the lights come on as soon as we enter the kitchen. They turn off a few minutes after we leave the kitchen.A handy and affordable way to enter the kitchen safely!

Let me preface this by saying that I realize that I could have made a mistake and ruined the sensor myself. But I don't think I did. I'm an engineer and I've designed and built circuits many times. If I made a mistake I can't think what it would have been, and it would have to be an easy mistake to make.Mistakes that I didn't make are: I didn't put more than 12vdc to the sensor. I verified with a good voltmeter before connecting power. I didn't put a load greater than the stated rating. I chose this sensor because it is supposed to be able to handle more than 3x the load I needed it to switch. I didn't verify the actual amps, so I guess the device it was powering could have had a fault, but I don't think this very likely. I didn't reverse the polarity. I powered the sensor with a power supply that already had the correct barrel connector and so I didn't manually choose the polarity.Like several other negative reviews state, my sensor wouldn't turn off. The first couple of times I tried it it worked, but then it just stopped working - would never switch off. Other reviewers here talk about heat and smoke - I didn't notice those symptoms and looking at the PCB I didn't notice any burnt components, but I didn't look very long or very closely so it's possible I just missed something.I'm taking the advice of another reviewer and buying the brand that worked for them. If I find that I made a mistake I will update this review.

I bought one for motion detection of amazon LED 2835 strip lights and it worked fine with an amazon 12v 1a plug. It turned on and off as expected with motion and could alter time delay. Ordered 3 more motion PIR and the same LED strips from amazon and plugged them into a 12v 2a amazon plug. Didn't work! It would flash on and off on the shortest setting and when adjusted to come on, it would never turn off just as reported by other users. I also tried an amazon 12v 3a plug. Same problem. Then reordered Amazon 12v 1a plug. Surprised it worked fine! So it seems that the motion PIR works with a 1a power supply but not 2a or 3a in my install. So finicky.

I rarely write reviews. But this motion detecting unit solved a vexing problem for me: how to switch on LED light strips in a hall closet and under a set of kitchen cabinets. I knew I didn't want to wire in a new electrical box with a proper toggle switch in either location. I first tried two types of touch sensitive switches. The kind you tap to turn on. Those were awful, they simply didn't work consistently or even at all sometimes. One isn't available any longer, the other was the LEDENET iTouch LED Dimmer Controller. Don't get that.I have found the Sensky motion sensor to be perfect in both applications. The hall closet switch is mounted to the bottom of a head-height shelf on he front edge, pointing straight down. It's ~12" from the door, but the light turns on every time when you open the door and step into the doorway or reach for a coat. It also turns off automatically in ~3-5 minutes. The under-cabinet switch is mounted to the bottom of a cabinet, pointing down. It is mounted mid way between the front and back of the cabinet. I put it above my coffee maker so I know where it is. I have to wave my hand under the switch to get it to turn on, which is fine. But I never get any false alarms where the motion sensor picks up someone walking through the kitchen.