I had installed a sensor switch in the new house's garage, only to find out that the light never turned off completely. I went to Home Depot, Lowe's and Ace and none of the experts there knew what to suggest. I then did some research online and found out about electronic and magnetic ballasts, so I went back to the stores to ask for a sensor switch compatible with electronic ballasts. Again, no help.Then I found this and decided to buy it without the certainty that it would work. Once I installed it, the light in the garage is working exactly as I had expected.If you have an electronic ballast, this is the switch to get.They’re a quality sensor switch but the design is mutch bulkier than other sensor switches. They won’t fit well in a junction box with many other wires. They work really well in a single switch but if you want them for a three way switch you have to jimmy rig them kind of and it’s a pain if you haven’t worked with something like them. They are not wired the same as a standard three way switch. I would personally buy different ones if I was ever to install occupancy switches again.A little difficult to program. I was used to one's with dials and or dip switches inside to for ease of changing settings. This one you have to use the one button (on/off) to program. It's time consuming but doable. Seems to work well though. If your good and patient with electronics then this probably won't be a big deal to you.Installed these in a commercial application for bathroom ceiling fans. They are about 95% reliable. Sometimes they don't detect someone walking by and fail to activate. Easy to install. No programming required.Does what it says, but buttons can stick at times and you will have to reprogram the thing to fix it every so often. Takes about 15 minutes or so to do that. Kind of a hassle. The buttons should be more stout and not so "squishy."arrived on time . competitive pricing .Reliable & accurate wall sensor, but cumbersome to program.Excellent product. so nice to walk in and the light comes on. I would recommend this product