Home > Consumer Reviews > Honeywell TM005X Wireless Indoor/Outdoor Thermo-Hygrometer

I was disappointed. For starters, "Honeywell" did not make this product; some no-name company that is simply licensing the Honeywell name did. As someone else mentioned, the indoor and outdoor units display different readings - even when sitting next to each other; makes me wonder how accurate either gage is. It has a very noisy mechanical button to 'click' between indoor and outdoor units, and since it is designed for more than one remote outdoor unit, you need to always click through blank screens to get back to the indoor reading. There are better and cheaper electronic gages out there.

I thought Honeywell would be a name to be trusted: but I was mistaken. I bought two of these units. Both of the transmitters were defective..neither reported the humidity with any reasonable degree of accuracy unless you would agree +/- 50% was within an acceptable range. Two requests asking for help from their website went unanswered.

Save your money.

There are two units in the package: one is the main receiver and the other is a remote sensing device. Both report temperature and relative humidity. I installed the batteries and let both units sit for a day next to each other before comparing readings. They both read temperature within a degree of each other but RH typically is 4-7% different. The remote unit consistently reads higher.

I notice in the specs that temperature and humidity ranges are specified but not accuracy so I do not recommend these units if you care about that.

One other thing. The C to F switch is broken on the remote unit so it will only read in C.

Bottom line - I would spend more money and get better sensors the next time.

When I received this product, it did not work. I contacted the phone number on the package, Hidecki Electronics, the company who makes it. They sent me a replacement for the Base, as they determined it was not working properly. I had to pay to ship it back to them, but they promised another remote in repayment for the shipping costs. Well, they shipped a new base, but no additional remote. I contacted them and they said they would send the remote. I got another base unit instead! Neither unit displays the same readings. Plus, now the remote will not send a reading to either base unit. We have replaced all the batteries, however they still do not get a reading from the remote. Plus, it seems that these units are battery eaters! I contacted the company twice now, and I still do not have a response. I would not recommend this product. Spend more money and get a unit that works! We have another product that displays just indoor temperature and humidity, which was checked against a $600 professional unit and is accurate. These Honeywell units do not compare to our $20 simple temp/humidity, old reliable by Micronta.

The readings between the base and remote differ so much that you can't decide which to accept as true! I set them side by side and got a diff. in temp. about 2 deg. but the humidity was about 10 deg. off!!