VaikbyIndoor Thermometer 4Pack, Humidity Gauge Meter Digital Hygrometer Room Thermometer for Home, Hight Accurate Temperature and Humidity Monitor, Large LCD Display Fahrenheit or Celsius

First, not sure why people are saying it's small. One of the pictures, on the product page, shows an egg in comparison in regards to its size. But moving on from that.This is small and accurate from what I can tell so long as you don't put it near vents or in direct sunlight. I'm not sure on the accuracy on regards to the humidity reader but I mainly got it to read the temperature between outside, the garage, and the attic I'm working on to insulate to try to keep the heat out in the summer and heat inside in the winter. So, I wasn't worried on testing that out.But today, the strangest thing happened. When I was passing by to read the temperature on the one that was outside, I noticed that it was in Celsius. That was odd. I didn't touch it nor did it move from the spot I placed it in. So, out of curiosity I took it inside to try and figure it out. I took the whole thing apart, 3 layers in total, which wasn't hard to do. I could basically use my medium bendable nails to open it so long as I used the corners. It was so much easier doing it like that since if I did that from the sides, I would bend my nails to the point it rips. But back to the subject on hand... Taking it apart, I couldn't exactly figure it out since when it came to actual wires and circuit board, I am completely stumped die to being a novice. So, with no way to findthe reason why, from doing it this way, I snapped it back together. When putting it completely together it seemed to have resetted the thermometer back to Fahrenheit.I messaged the seller in regards to this and not only were they polite but they were wish quick to reply. They even offered to send another pack in regards to what happened but it was fine. I was simply curious. Still am but maybe I'll eventually figure it out or forget until if it possibly does it again. But, still. To offer to do that really spoke out loudly to me.Also the price is amazing for what you're getting in my opinion

I have used these around the house to help determine the temperature fluctuations from room to room. They are perfect size to be inconspicuous enough they don’t draw attention to themselves, but big enough to see from a short distance.

They work great in bait & tackle shop. I ordered a set of four and because of how expensive they are, I may just order 4 more.

A bit small, but still not difficult for this old guy to read. The thermometers seem to be of fairly decent quality, well made and accurate.I just wish we'd go back to manufacturing as many products as possible here in the USA again. But this time, we will need to be much more environmentally responsible, because we sure do not want to continue polluting our air, water and soil as China and other nations are still doing.

Size is useful. Accuracy is lacking. If the mfg cannot guarantee accuracy then they should so state, i.e “accuracy + - 10%, etc. Side by side, all four had different readings.

Its a little smaller then an egg, but it seems to work ok. It only came with one double sided dot so I could only stick one up.UPDATE: was contacted by the seller and he sent me a new set. They all had their little sticker. Seller stands behind his products and will mske it right for you..Thank you.

I was initially surprised when these came that they were small. That was my fault for not reading the specs. I actually love the size, and like that they come with an adhesive to mount on the wall. I have placed one in my daughter's room using the adhesive. It has been up for about two weeks now without falling down. The display is also easy to read.

I'm kind of an expert on this market because of my long history of using these in cigar humidors at home and in cigar stores. While there have been button cell versions for a long time, the accuracy, circuitry and battery technology has improved. These are accurate within the specs listed. I still have hygrometers that use two AA or AAA batteries. Those send more toxic waste to the dump than these new models using one long lasting button cell lithium battery. The smaller size does mean you have to be closer to them and directly in front to read the display so not as good for reading from across the room. Buying replacement batteries in lots of 5 or more keeps the price down below the cost of AA batteries. For the same price as one larger meter you get 4.