Leviton Humidity Sensor Switch for Bathroom Exhaust Fan, Automate Ventilation, Air Circulation, Moisture Control, ¼ HP, Single Pole, DHS05-1LW, White

Easy to install, works great! I tested the various settings and adjusted the switch to turn on automatically at 35% humidity which works great. You can set it 50%, 65% and even higher if desired. The unit is a standard size switch, so I had no issues reinstalling the original dual wall face plate. It looks really nice and made the bathroom look nicer with it installed. I like that you can also still manually turn it off/on as desired and that it auto shuts off after 10 minutes in case you forget to turn it off. Super easy to adjust, takes seconds to do. Highly recommend this for folks that like to "set it and forget it".

Top line- works great. Easy install. Terrible, terrible instructions. I had a friend looking for some extra work during the govt furlough and said she would deep clean the house, so I took her up on it. While cleaning the bathroom, she said she noticed some mold growing and I should run the vent fan every time I shower. Embarrassed, I admitted I was not the best at remembering to turn the vent fan on after showers- or turn it off…..she emphasized the necessity. This started my quest for a humidistat. There are lots of humidity activated switches on Amazon and I didn’t really know which one to select. I decided, for the price, I’d go with a name brand. More than twice the cost of least expensive, but less than a good bottle of scotch or a week’s worth of groceries. There is still some sense of security and confidence in a brand name- The installation is very straightforward if you are comfortable with electricity. If not, just hire someone. It’s literally a 15 minute install. You’ll be Charged for an hours worth of work. Whether you install it yourself or not, the sensor works great- once you decipher the programming instructions. The instructions are terrible. All the information is there but none of it makes easy sense. It took me a week of trying to understand when and why the fan was turning on. Make sure to set option 3, humidistat. It’s not really clear that it’s necessary. But it is. Once I did that, the sensor and switch functions perfectly. Turns on when I run the shower. Turns off 20 minutes later. So, in spite of the week of trying to figure it all out and in spite of lousy instructions, I am still thinking 5 stars.

Unit came in a separate package. Installed the unit set it all up hooked it up to the new fan that I bought works like 1 million bucks should cut down on the humidity in the bathroom.

95% of the time this work great, for some reason I can't figure out there are times where it will not turn on even when the room is completely filled with steam. This mostly only happens when we do two showers in a row and it turns off in the 30 min set time, most of the time it will click back on within a minute, other times it won't click on at all (again this is rare) With that said, i found the programming to be easy unlike what other are saying, instructions are fine as is the installation.

I just installed 2 of these in our 2nd floor full baths, and both are working well! They turn on within 30 seconds or so of the showers being turned on in both bathrooms. Both bathrooms have 7.5 ft ceilings, and the fan switches are located no more than a few feet from the tub and shower enclosure. I programmed ours to turn on at the lowest relative humidity (35%) with a 30 minute timeout. Note that after the timeout period shuts the fan off, if the relative humidity (RH) still exceeds the preset percentage limit, the device will reactivate the fan for 50% of the programmed time - so if the timeout is 30 minute and the RH is still too high, the fan will reactivate and run for an additional 15 minutes, which is half the 30 minute timeout I programmed - it will do this 2X if needed, so in that case, the fan will potentially run for a total of 60 minutes if a 30 minute timeout is programmed - programmed time values are 10,20,30 and 45 minutes. Installation is straightforward - I wire nutted the line and load leads on this switch to existing pigtails for the mechanical timer that I replaced with this switch. I added the neutral lead wire from this switch to the existing wire nutted neutral bundle, and the ground lead to the ground bundle. Note that this switch DOES NOT require a neutral, but if no neutral is present, the white sleeve on the neutral lead is removed to re-identify it as a ground wire, and both that wire and the explicit ground lead are both connected to the ground wiring in the box - so while a neutral wire is not required, a ground is required in the box to make this switch work - note that in older homes without an explicit ground wire, sometimes the steel box itself is grounded, so a ground lead could be attached to the box and wire nutted to the re-identified ground lead and explicit ground lead on this switch. There are an impressive number of programmable operating modes and settings within those modes on this switch. Out of the box, the switch is defaulted to operate in bath fan mode, with a 20 minute timeout period and a 50% relative humidity setting, which likely will work fine for many folks. As mentioned, I overrode the default timeout from 20 minutes to 30 minutes, and the relative humidity from 50% to 35% - the programming is a bit tricky and may take a couple passes - best bet if you mess up is to let the programming period timeout so that the settings aren't saved, and then re-enter programming mode after your "practice run" after you have the hang of programming it. Keep in mind too that the switch can be operated manually, and will run for the programmed time when turned on; the automatic operation can be disabled by pressing the bottom of the switch for 5 seconds, and re-enabled by pressing the top of the button.

We have a bit of a humidity problem in the summertime so I need to turn on the bathroom fans after a shower. These do that automatically and seem to work just fine. Now when anyone takes a shower the fans come on to suck the moisture out.

I installed it, easy to install, and it works well

I like these switches. They work pretty well and have a sensitivity setting you can change if you'd like. Do a YouTube search with the model # to find out how. The instructions they come with aren't very good/clear but the video is awesome. Also, I like that the switch monitors humidity and also has an on/off override. Sever on the market don't do both as easily as this one.

Easy installation, cycles on and off, depending on humidity levels.

The installation was relatively straightforward, no problems. The switch is doing exactly what I wanted: triggering the fan automatically in a bathroom during showers, with manual triggering as desired. There are three separate settings that you can adjust on the switch, all done by pressing the button in different ways and watching the responses on the LED. That's new to me for an in-wall switch. I took the time to go through all the settings, I ended up not changing any from the defaults. I do have to remember to save the instructions, either paper or PDF, in case I ever want to change the settings.

I use this as a dehumidifier and it works great. It comes on exactly as set

It was a relatively easy install, and has worked perfectly since. Having the fan automatically work when moisture builds up from showering is a lovely quality of life addition.

Works as it should