Thermo-Hygrometer Remote Sensor

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! :DThey lost one star, because that really shoulda been a switch.

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!

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).

Really happy. This is to replace a unit which we had had for many years and had stopped working, we consequently realized how much we actually used it and were worried we would be unable to find a new unit which would be compatible with our existing indoor unit.

This was a replacement for an original sensor that did it's duty well for several years.I'm happy with the replacement. It works just like the original. But, be sure to FOLLOW THE DIRECTIONS so this sensor will connect to the master unit. You take batteries out of both, then put the batteries back in, in a certain order. The directions are clear so follow them.I have three of these sensors. It's great to get accurate readings from different locations, inside and outside.UPDATE: Photo shows this sensor after 4.5 years of exposure outside. It is mounted under the edge of my deck. In those years the temperatures ranged from 5 F to 105 F. This sensor, and two more like it, were buried in snow after a blizzard this winter. Signal was not interrupted. I'm getting about 2 years on a set of lithium batteries. (Lithiums are better in cold weather.)This sensor is linked to two base stations: Oregon Scientific BAR388HGA Wireless Weather Station with Atomic Clock, Black