Sensor is not centered
921124
Warning! The sensor is not in the center of the mouse. It is closer to the edge. If you turn the mouse like I often do, the cursor movement will be completely ruined.
3077615
I bought the Schlage Home Motion Sensor to work with the rest of my Nexia system, especially my camera.  I have an indoor camera, which I aim outdoors through a window.  Unfortunately, it doesn't have motion-sensing technology.

I placed this motion sensor about seven feet off the ground so it can activate my camera when someone enters my courtyard.  At first, I placed it facing the street, to sense people as they entered.  I'm not sure if it was the sun or the movement of the trees or what, but my sensor was being triggered constantly.  No, I was there and did not see cars or people or pets passing by.

I set the sensor to be less sensitive, but that didn't help, so I moved it to face the opposite direction, towards the door.  That's better, but there is a lag between when the sensor is triggered and when the camera starts recording, so I often miss seeing the person who entered the yard.  My phone does notify me there was someone there, and I can see if the porch has packages, so it's doing what I really want it to do: let me know when the UPS man comes.  It will most likely miss a criminal's face.

The sensor is mounted onto a bracket that can be screwed in or taped on.  I skipped both options and used Scotch Command Strips.  Either way, the sensor is made to be easily removed, although it will trigger an alert if someone tries to open it up.  I don't think anyone but a vandal would do that, because the sensor looks like a cheap lighting system.

Speaking of cheap, the plastic feels cheap.  I think if I pried it open enough times (we do that to change the batteries or settings), it might eventually break.  There ought to be a better way of building it so we don't have to pry it open.

Lastly, I get way too many text messages when the motion sensor is triggered.  Each event gives me at least ten messages.  I could do well with just one.

Yes, there are annoyances, but the system works, which is why I'm not returning it.
2590839
After removing the old sensor and attempting to insert the new one multiple times, I realized that the new o-ring that came with my new sensor is not the correct size.  I had to reuse the old one and so far it is working.  Definitely won't use this company again.
1695844
the sensitivity of this product doesn't work well. It looks like it is intended to be mounted close to the floor because the sensor seems to be looking upwards, so I mounted them 6 foot tall and sometimes they don't sense movement, but when I mounted them close to the floor they sense movement very well.
260587
The taller wide-band sensors with 5 wires can be a challenge with the narrow slot on the socket.  The Bosch sensors I was installing had a plastic convoluted tube that I had to squeeze into the slot.  The edges of the slot were a little sharp so I filed them down to make sure it didn't cut into the insulation.
1350148
I need to return this product it is the wrong sensor how do I return it for a refund
415297
The sensor is good but it's a little bit too big for my hand (palm grip). Think it is more suitable for claw grip or maybe a larger hand size.
3851418
Sensor isn't working properly, I'm forced to tap it in order to get it working.  Looks good when it's on but it doesn't function as intended.
4386749
Actually I don't know how it is.  It didn't come with a sensor. I did down load the manual. I'll probably return it.
1727168
Wanted it to work but couldn't make the adjustment so it could point accurately...
2886389
Works better than I expected for a "w-i-i" sensor bar, but the sensor is unable to connect with the remote at a distance greater than 4 feet. You get what you pay for though, so I will be returning it and purchasing a more expensive, more legitimate Wii sensor bar.
4086575
I'm not sure if I just got a dud, or if all of them are this way, but the one I received did not work nearly as well as some reviewers are giving it credit for. The mouse pointer would jump around the screen, almost like the sensor wasn't working right, but it was unobstructed. Also it is too small for me, and I already have small hands. My hand would begin to cramp up with little use.
2362793
This sensor did not work to resolve the problem and was not satisfied.  Not sure if these sensor can be tested somewhere or at a shop.
2511183
The sensor on this thing is so fickle and doesn't always pick up, even though I'm standing less than 5 feet away. I was hoping I could use it as a way to start video recording, but it doesn't work like that.
59565
As seen in previous reviews, there is some type of very sticky foam tape that protrudes radially from the base of the sensor (see attached photo).  It prevented me from detaching the sensor from the base until I distorted the base enough to release one side.  I removed the excess tape with a razor blade but then discovered that the fit of the sensor into the base is such a close depth tolerance that I had to buy flush headed bolts.  Even after this the sensor wants to fall from the base.  It appears that this is because the "tits" on the sensor (shown in the photo) just don't protrude far enough radially to ensure a solid engagement.  It appears that the function of the sticky tape is to try to make up for this VERY POOR design.  However, the tape just makes the fit less sure. I am making a wall mounting so I, see if the sensor falls out of the base.  I would definitely be returning it if this were a ceiling mount - again as mentioned in other reviews. Bottomline: the manufacturer needs to fix his design!
664310
All sensors were +-1% of each other. Had some problems syncing at first but nothing taking the batteries out of the receiver couldn't fix.
2304764
I previously owned a 1byone single monitor unit that has worked flawlessly for a year and a half and bought this two monitor unit to replace the old one so I could have a chime upstairs and downstairs in my house. I struggled to get the monitors to link with the sensor and the sensor does not always go off. I will most likely have to just put the old unit up. I run a daycare and have an autistic child so I rely heavily upon the sensor working 100% as I have a split level home. Disappointed with this product compared to the older single monitor unit.