This is a nice unit. Compact yet readable display, and the remote sensors have all the range I need: One unit is in the backyard shed, 75 feet as the crow files and through four walls; one in the main house, 25 feet and 3 walls; one in the garage downstairs, 20 feet and one floor. So far all have worked without issue. Laid side by side on my table with 30 min to stabilize, one sensor was a degree F high over the average, and one a degree low"”close enough for me. Based on other reviews I am hoping for 8-12 mo of battery life for each sensor.

The documentation is not great and completely fails to address a key feature: the options with the MIN/MAX feature. The documentation writers for this product are selling the engineers short!

It looks like you can track MIN/MAX in two ways: with an automatic reset every 24 hours, or all-time (until you choose to reset manually). To switch modes, when the display shows current data (not showing the MIN or the MAX), hold down the MIN/MAX button for ~5 seconds. The little "24hr" badge in upper right will tell you if you are in 24hr mode or all-time mode. I assume the moment when you put it into 24 mode, it is at that time every day that it will auto-reset, but I still need to test that"”it may be the 24-hour reset timer runs from the last time the batteries were inserted.

And it looks like when you hold down the MIX/MAX while in MAX mode, it resets the temp MIN/MAX, and when you hold it down while in MIN mode, it resets the humidity MIN/MAX.

Nice product, inadequate docs!

Three level house. Main in family room, outside on garage (under an eve), one upstairs and one in basement. Easy to get connected and they work fine. Happy with this purchase.

Had been using the 2 sensor version but needed another for a second fridge. I tried using another 2 sensor system, but the display couldn't sync with the correct sensors. So changed to this one and it works just fine. Did keep the other going to ensure accuracy and they were within 2 degrees of each other - good enough for what I needed.

I bought the set that has 3 temp gauges. Two work, third one doesn't. I only needed two, but I would have used the third had it worked.

The two working seem to work well, quick readings, easy to see. Also, master (reading unit) only needed three batteries and each temp gauge uses two batteries. AAA batteries. So less batteries than I planned on needing.

Works good able to check rooms temperature in whole house. Only problem I had was one sensor stopped reading. If this happens just take out batteries on main unit and reinstall batteries and unit will reset sensors. Works for me.