Eillet 5-Pack Mini Hygrometer Thermometer with Digital LCD Display Indoor Temperature and Humidity Meter for Home Office Humidifiers Humidors Car Greenhouse Babyroom

amazon no sooner dropped this on my porch and I had these five little boxes opened and setting on my counter... as you can see every one of them are showing a different humidity READING after 10 minutes adjusting to the room the one on the end is just flickering .... SURE GLAD I THOUGHT TO TEST THEM BEFORE TRUSTING THEM .. BEWARE....... CONTINUED starting here.. the first part of this review was done a week ago when these arrived and I realized they were junk.. . from here to the end will be for what happened after I requested a refund and gave bad review. ok so I don't really know what happened here, But I know for certain that I was very clear and to the point when I requested a refund. But to my surprise ,a request was made from a ghost I'm guessing to have a replacement item sent instead of a full refund like I had asked... so anyways I decided to skip the hassle of trying to reach someone at amazon to explain my situation and see if the replacement item was correct and working properly.. Well just like the first box of five , They all read different numbers while sitting in the same place for hours.. I'm really confused as to why this item I requested a refund on is being shoved at me in this way... I do not want this junk! I was very clear in my first review... Anyone who can read thru my angry full of typos book here... Please steer clear of this item.... 10 different Humidity and temperature readers( two totally different orders) All Junk. you get a better item from a .25 cent gumball machine....This is a true story

Got them today. They were actually all nearly identical in RH and Temp right out of the boxes. Setting out on the table for a few hours they are all the same RH now and within 1 degree F of each other. They are powered up already.The change from C to F is kinda a kluge. You need to use a metal object to short the circuit you can sort of see through the hole on the back, then once it changes quickly pull the metal object out and hope the F stays. It took a couple tries on some but it is doable.For the price they are absolutely worth the money so far. If they start to die I will post back, but I suspect they will last long enough for my purposes.I bought these round ones instead of the rectangular ones because it will be much easier to mount them using a simple hole saw.

Disappointed. 5 units, 5 different readings. No instructions. Can't figure out how to change from F to C. I was hoping to check temperatures in 5 different rooms, but not one of theses reads the same. They all give different readings by more than a degree C and one has a 20% higher humidity reading than the rest. But, for the price, not worth sending back. Kinda bummed.**edited**After a day of acclimation, they all read within a degree and a couple % humidity of each other now. Also, to change from C to F, you need to insert a conductive rod (big copper wire, etc.) into the hole in the back to activate the conductive webbing on the circuit board. I think the button is missing that's supposed to do this.

I keep these in different areas all around mygrow room and they work really great. When I first got them I tested them all together and only two had differences of only one or two degrees; nothing I am too worried about. Wasn’t as easy to press the ‘button’ to change Celsius to Fahrenheit as I had initially had hoped. I have to use a small metal tool to change them but rarely ever have to reset them.

I have ordered this type of thermostat before for my animal cages. The price is right, so I can not complain about that. The ones I had before had a self adhesive back while these do not plus I can not get these to change from Centigrade. Final problem is that the battery is already installed in the unit, so who know how long they have been that way.