Bought 2 of these the other day. Opened them up, put in the battery, and they were ready to go. I bought two of them so I could install them in each of my childrens bedrooms so I could tell the range of the temp and humidity each of thier rooms. First I put these next to my house thermostat which has a current temp and humidity displayed. After 1 hour of being in the same room right next to the thermostat both of the Chaney units read exactly what the temp was, and the humidity on both units were the reading the exact same (7 units higher) then my house thermostat. I don't know if my house unit is accurate or not but at least the two Chaney units read the same for temp & humidity. If they read differently than each other than I would say they weren't accurate but since both read the exact same things I give them two thumbs up and agree this is a great buy, especially since it displays the current temp and humidity and displays the daily low/high for each. Great Product!!!! Small, lightweight, has magnet on back to stick to fridge or can use clip to attach it to belt, or anything it can clip to. It also can be placed on a desk, shelf, etc but standing it on end with the attached stilt. (Posted on 1/10/13)

We use a number of these in our cabinet shop and at job sites. Despite other's complaints about accuracy, we have found them to be quite reasonable, especially considering their low price. If you put ours side by side they will all stabilize to within a few percent of each other. They are small, yet the display is very easy to read. They use only a single AA battery. The only down side is that the 24 hour high and low display is not resettable without taking out the battery, but that's only a down side if you are looking for min/max in a time frame other than 24 hours.
(Posted on 11/16/12)

I love this it helps me keep the humidty level in my home very comfortable. And its very affordable!!! Thanks again (Posted on 11/4/12)

I have another digital thermometer by this manufacturer, and it has always worked accurately. That's why I was enthusiastic when I came across this one. So far it has met all of my expectations. (Posted on 10/29/12)