Thermo-Hygrometer Remote Sensor

I bought a couple of these to put indoors. I already have a nice Orgeon Scientific outdoor weather station, but wanted to measure temperature differentials in various parts of the house to find good ways to balance and control my hvac system. These work great as standalone units - you don't need to have it paired to any OS base station or PC. Using the RXCOM receiver they work great to monitor from my PC, through HomeSeer. I've compared these sensors side by side and next to several other temp/humidity sensors I have (including my 1k$ outdoor unit), and these seem to be VERY accurate. I trust them more then any of my other cheap units. My only gripe is the NX model is Fahrenheit only. I wish I had known that prior to purchasing. I definitely prefer the metric system, but apparently I'm the only american that does.. I read that just "N" models are Celsius, this : THGR122NX/BLRWLS Thermo-Hydro Sensor might be one, they just have it mislabled (google search title shows it's just the N model, so I don't know). I wish they had put a switch on the back of the unit, to choose between C or F on external display. Additional notes are : There are 3 channels available to select on this, and it polls every 40 seconds, and 2x AAA batteries that last at least 6 months (how long I've had mine in).

As I live in Canada, I have never found this unit to fail after owning it for more than a decade. Use the premium batteries and the unit will function down to -40 C/F! I rarely replace batteries - only every 5 years or so. The best unit (when coupled to an Oregon Scientific base unit) for those who enjoy monitoring the weather!

Good! Syncs fine with my EMR211x. I was a bit put off at first as it was showing Fahrenheit on the little display, but figured that it would be changeable. Carefully opened up the unit, and looking on the PCB there is a tiny jumper pad marked CF, it was soldered across. Unsoldered it, put everything back together and voila! Celsius! :D They lost one star, because that really shoulda been a switch.

instructions are good, easy to install, works well

Lasted 3 1/2 years. I paid over $30 last time - from Amazon. It does a good job and I have no problem with the thermistor life. Funny - we have a WalMart analog (a big, plastic dial type thermometer) mounted outside the breakfast room window - it reads Farenheit and Celsius, But, at the kitchen bar, I can see the digital readout on our Oregon weather station which alternates the interior reading and the exterior reading, along with humidity. Have had that unit for about 11 years. So, this is the third sensor for the receiving unit. Years ago, I had the unit that measures rainfall amount and wind speed/direction. Lots of good that did - the trees prevented accurate rainfall amounts and the anemometer really needed to be on the chimney and not on the back yard fence. No way would my wife let me go on the roof, ladder in hand, to play with such a mis-adventure. Probably could have made World's Funniest Mis-adventures.