Product review (5 stars): Working Well - Meeting Expectations
I primarily wanted this unit because of humidity feature. I had just installed a whole house humidifier on our furnace and wanted to be able to monitor its performance. The negative reviews gave me some concern as they involved accuracy and more notably the 99% humidity readings. When I received the unit I installed the batteries and set the base unit and sensor side by side on a shelf and after an hour or so the indoor and outdoor readings matched. I mounted the sensor on the side of the house in a spot where the sun never shines and I fashioned a small "awning" just above the unit to protect it from dripping. The first morning I observed 99% humidity. As we live in a coastal area so there can be fog and this fall there has been lot of evening/morning dampness in the air the high reading should be expected. But I brought the sensor back inside just to check and after a while it was again matching the base unit. I sometimes compare the humidity and temperature readings to the Weather Channel app and they're always quite close (I do not expect them to match exactly just because of relative locations).