TOPGREENER Humidity Sensor Switch, New Model, Air Moisture Detection for Ventilation Fan, Bathroom Fan Automated Control, Adjustable Timing, NEUTRAL WIRE REQUIRED, UL Listed, TDHS5-LA, Light Almond

Before buying this switch I went through two Leviton IPHS5 switches (they do the same thing) both bought at Home Depot. I know electrical and yes, there were installed correctly. My Panasonic whisper fan (which starts slowly) simply didn’t work. The fan would begin to spin slowly every few seconds, then cut off.After failing with Leviton I switched to this product, hoping against hope it would work. I was not let down. This product worked perfectly the first time. Just slightly less important is the fact that this product is much easier to program than Leviton’s version.I strongly considered giving only four stars due to the wiring. This switch connects to Romex via stranded wire. There is no way to insert the Romex directly into the back of the switch. Perhaps this is just preference, but I have never liked threaded wire.That said...I couldn’t be happier. This product worked where Leviton let me down.

Installed this humidity sensing switch replacing a really old school fan timer in our laundry room that had an analog clock in it with metal tabs to set time intervals. Installation was simple and wired up exactly as the old timer. Tested it by blowing on it and it immediately turned the fan on when sensing humidity from my breath. The instructions that came with it for programming are totally incorrect and mention being able to set the time for how long it runs, which is not possible. After researching this I actually found the correct installation guide online which states the time is runs is always 20 minutes and is not adjustable. You can only adjust the humidity sensitivity to three preset settings and that's it.Programming: - The fan button will be used for programming - Pay close attention to the LED lights as it will flash to indicate successfulprogramming steps and each time the button is pressed while making selections. - After each step, there are only 20 seconds to make the next programmingselection. If a selection has not been made, time will expire and the LED light willflash 3 times and exit programming mode.There’s only one Programmable Function Function 1: Humidity level (Humidity Range 45% 65% 80%) - Setting 1: Low humidity sensitivity 45% (requires little humidity to trigger) - Setting 2 (Default): Medium humidity sensitivity 65% - Setting 3: High humidity sensitivity 80% (requires high humidity to trigger)To program the humidity sensor, you must first enter programming mode:STEP 1: Enter Programming Mode Press and hold the fan button for eight seconds until the LED indicator comes on.STEP 2: Choose the Setting Press the fan button the same number of times as the Setting Number (For example: Press the button 2 times to select Medium detection 65%). After the last button is pressed the sensor will flash back the current setting for that function 10 times at two-second intervals. If no selection has been made, the device will exit programming mode.STEP 3: Save the Settings Press and Hold the fan button for eight seconds. The LED light will flash 3 times. indicating that the settings are saved then the load will turn OFF.Example: Change to Setting 3 (High humidity)1. Press and hold the fan button for eight seconds until the LED indicator comes on2. Press the fan button three times. The LED indicator should now blink three times every two seconds3. Press and Hold the fan button for eight seconds. The LED light will flash 3 times indicating that the settings are saved then the load will turn OFF

I bought this to replace a wifi switch that was being triggered by a wifi humity sensor.It works fine on the default setting.When set to be more sensitive, the results were not what I expected - seemed to fail and eventually I set it back to default.IF you manually operate the fan switch,THEN let it run through the timed circuit (20 mins I think) if you manually turn it off, I THINK that may where we run into terrible and messes up the settings for auto sensing - MAYBE I am wrong - I haven't figured that out. We found it to work better if you use it manually then let it shut itself off.My understanding is IF it runs for 20 mins and the humidity is still high then it will shut off for 2? mins and then turn back on (maybe it's 5). I don't know why they designed this cycle. Sometimes it runs 20 mins turns off for a short min and then turns right back on.I found that you can breath on it to trigger it on too. Why breath on it ? I was just goofing off.I don't think this design qualifies for a 5 star rating but it's a good 4 - the instructions could have been written much better - I wasn't able to find out what the RED light means when it's on or cycling in the automatic mode. Maybe it says so in the instructions -All this said, I have been in home automation since the early 2000's and settled with this switch rather than trying to use a smart switch. I didn't find a great solution and this was my compromise. I may try another name brand to see if I can get better results. But could buy this brand again

Ordered another brand and it kept tripping the GFI circuit breaker. Returned it. This unit works great in the same switch box as the other one. Does not trip the circuit breaker. Note, you HAVE to have a common wire in box.

The automatic humidity control sensor works BUT, once you turn the fan on manually it erases the programming and the switch has to be used manually from then on or the fan will never turn off. The instructions clearly state that there is only one programming function-humidity level. Then, in the next paragraph it explains how to change the auto-off timer from 10 seconds to 20 seconds. Maybe things have changed since I went to grammar school but in my book that's TWO programming functions. Perhaps the conversion from Chinese to English text is the source of the problem. Anyway, the humidity sensor on this thing is worthless! Could have simply bought a time delay off switch for less than half the price.

Easy to install

I use this product for my acoustic guitar and it works great!

Although the scary reviews. I decided to try my luck and ordered 2. came on time. very easy to assemble and configure and working fine. however sometimes yes turning on might be delayed but its OK. I don't expect 100% accuracy of few dollars sensor. the sensor light is very bright so its better to shut the bathroom door in case the switch is facing the door.Cheers !

I purchased this Humidity switch to turn a bathroom fan on when the humidity gets high but this one won't turn the fan on even when condensation is running down the windows and mirrors. I have tried each of the 3 sensitivity settings with no improvement. So now I just use it in manual mode so the fan will shut off in 20 minutes.

Working perfectly as expected. Comes on automatically when needed, turns off by itself when its done.Really like it.