OS310U-W-K Motion-Activated Occupancy Sensor Wall Switch, White

I wanted a motion-detecting light switch that also had a nightlight. I use them in the bathrooms; the nightlight provides enough light in the middle of the night that I don't have to turn on the main lights and then have night blindness as a stumble back to bed. (OK, TMI, but that's my main application)I purchased several of these and also similar units from Leviton (OSSNL-IDW). So far all have worked, but the reliability and feature set of the Cooper units makes them preferable to the Leviton versions. I'll compare both below:Both have motion-sensing and can be used as just manual on / auto-off and as auto on and off. I use them both ways; manual on in the master bath and auto-on in the guest bath and garage. The timeout duration is controlled by a rotary setting on both, but while it seems to not have any "stops" both units only allow 3 durations for the timeout. I have had older switches where these potentiometers get flaky after a while so this may be better. Neither will dim the lights (making them suitable for some flourescent lights and LEDs that can't be dimmed).Both do an adequate job of sensing motion and turning the lights on and then off after a delay. My Levition unit has been intermittent, sometimes not turning the lights on and sometimes not turning them off, but right now it seems to be working normally. I'll keep my fingers crossed.Both have a nice nighlight that you can enable, it shines through the manual button on the Cooper and through the IR window on the Leviton. The Cooper nightlight is brighter, and it also can be set to a preset dim level over a wide range of brightness. This is fantastic. The Leviton dim level is fixed and less pleasing to look at as it has the IR fresnel lens distorting it.Both require a neutral, hot, ground and load wire in the switch box. Be forewarned; a lot of electricians wire the circuit breaker to the light and then just a switch pair to the switch. You should really download the manual and also check your switch box wiring before buying either of these.Both support 3-way switching, but differently. The Leviton uses an extra wire to go to a normal SPDT 3-way switch that can change the light's state. The Cooper requires you to use a second identical switch in the other location and ties the load lines together ( and they have to be on the same breaker of course). I found the Cooper mode more useful as I could put a motion switch at each end of a staircase and the lights came on regardless of the direction I came from; with the Leviton you can only have one motion sensor in the circuit. The Cooper implementation keeps the lights on until all of the sensors have timed out. That's great for my workshop where I don't want to be working in one end and have the sensor just in the other end of the room turn off the lights. But it also means you can't turn off the lights manually as the other switch is still active; lights will only go off after a timeout.Both switches have a cover that hides the control settings. The Cooper's can be removed fairly easily; you have to remove the wallplate to remove the Leviton's cover. That's a pain if you want to fine tune the timeouts after installation.Both are very good products, but I will buy the Cooper version if I add more to my house. It seems slightly better designed and easier to use.

I purchased the unit to operate on a 3 way circuit. But once I looked at the diagram I noticed it was switching the neutral instead of the hot. Unfortunately it was going to be a real headache due to the way my existing switches where wired. Switching the hot would have allowed me to use it with little effort. Still I had a single switch installation where I made use of it. Unfortunately it made the night light feature useless as I put the unit in a pantry.

The previous model did not require a white neutral wire to install but also did not work after about a month. The previous model was turning on all be itself day and night. I'm using ins a 3-way configuration for an inside home stairway. This model has been working for more than a month without any issues. Follow the directions carefully, these are not wired like a standard 3-way switch. The wiring is effectively in parallel.

This is the only switch I have found with this unique feature set and it does the job very well. Let me explain, I wanted a motion detecting switch that I can also defeat in a bedroom situation where you'd want the light to stay off, despite movement - like when you are sleeping. I did look at the Leviton PR-180 switches which would have met my needs, except for my lights are all LED or Compact Flourescent and the Leviton offerings dont' work with these.The Cooper OS310U has a relay built into the switch so it's happy working with any kind of bulb. You do get the audible click when the relay fires, which might bother some, but I've gotten used to it.The defining feature for me is the nightlight-bedroom mode which you enable by holding the nightlight button down for 5 seconds until it blinks. What this does is force the light into a manual-on mode if and only if the nightlight is on. This means you can go to bed, or watch movies in the dark, or whatever you'd want to do without the light coming on due to motion.To be honest, I like the Leviton PR-180's functional design with its very obvious On/Off/Auto slider switch and I really don't need the nightlight feature, but after extensively searching, I can't find any other switch out there that does all of this and also works with CF and LED bulbs.Others have pointed out the wiring requirements are more extensive as compared to other switches, but it does also work in a 3-way (two switch) configuration. You'll need to ensure you've got ground, hot, load, and neutral with the optional 3-way configuration also needing the traveler, so up to 5 connections might be a little daunting. If at all unsure, hire an electrician for health and safety. I suspect a lot of the more negative reviews here might have been due to people not doing their research beforehand.I'm deducting a single star because I think the physical design could be more obvious toward the On/Off/Auto functional differences and the price at just over $30 seems excessive. Still, to get this feature set which also works with CF and LED bulbs, it's the only game in town. I hope the longevity holds out, as I've noticed a few people mention short lifespans, but I promise to return and amend the review should I have any issues along those lines.

Really nice works great!

so far good product -a bit bulky in socket and make sure you have the common wire in your socketalong with the existing wires and the extra ones on the unit -may be difficult to get into socketso far no issues with sensing and coming on and turning itself off