SMARTRO SC92 Professional Indoor Outdoor Thermometer Wireless Digital Hygrometer Room Humidity Gauge Temperature and Humidity Meter Pro Accuracy Calibration

I have 2 in my attic for monitoring the space, and one in my freezer as it was just repaired. unit can monitor temperature and humidity anywhere in your house. In the freezer! I tried as a lark, but the signals get out and it is incredible.

My title might imply dissatisfaction with their design decision to always display the remote sensor in the large display labeled OUT and the inside temperature (where the main display is) at the bottom in smaller type.I would have made the opposite design decision but this is a matter of preference and I have not let it influence my rating.Unfortunately I did not intend to use a remote sensor and bought this model because it displays temperature in tenths of a degree rather than whole degrees like their SC42 model. But if I don't use the remote sensor the large main display is BLANK.I suggest to the manufacturer to consider displaying the room temperature (where the main display unit is located) on the top larger display and turning the OUT Icon off when there is no remote sensor RF signal. If that is something that can be done in firmware it would make the main unit more attractive if used without a remote sensor.I have not tried changing channels but the instructions refer to 3 channels for 3 remote sensors so I am pretty sure there is no way to get the main room temperature to display in larger display.Both sensors appear to be very accurate but NOTE neither sensor is waterproof so you will need to be very careful in placement of the remote sensor if you place it outside.Again I don't need (or want) to display outside temperature so if that is your main interest exactly the way it works is perfect for you.By the way I checked its accuracy with a Pinpoint Calibration Thermometer which is within .2 degrees F and NIST traceable. I verified this in a clear ice bath in RO water and it was within .2 F (see photo)

Works pretty good, lost connection with the outdoor sensor 1 or 2 days after connecting it all up. Redid the connecting process and has work fine since

Works good and numbers are on par with neighbors expensive weather station.. Easy to pair receiver to base unit.

Full disclosure, this product was provided by the manufacturer, with the aim of providing a thorough evaluation/review. The monitor arrived in good order in compact packaging. The manual is easy to follow and succinct. The remote station requires two AA batteries and the indoor monitoring station requires 2 AAA batteries. I would like to have had the batteries provided, especially considering they are different types, but for the price I don’t think it’s a big deal. Both units immediately powered up and linked up with no issue. I would like to have the receive signal intensity noted on the display, to ensure I hadn’t paced the remote station too far away. The manual states it has a 200ft range. I placed the unit <100 feet for this test.I placed the remote station outside on a screw, under the eave of my garage, as the manual states it is not water proof. Additionally, the unit faces north, but it’s on a west facing side of the house. I live in Texas, so the afternoon heat will really put this product through its paces. We had 107°F temperatures this past week! After a couple of days, I relocated the sensor to the north side of the house, and the temperature reading were more accurate, i.e. don’t place in direct sunlight.The base station has a stand that opens and closes, so it can sit on a table. The nicest touch are the magnets on the back, as I was able to just “stick” it to our refrigerator.After placing the remote unit outside, I did note there was a slow update rate between the remote and base station, as their values didn’t concur. I also noted there was a significant acclimation period once the device was placed outside. For on-going monitoring, I don’t see this as an issue. If the update rate is slow, it’s likely at a pace relevant to the rate of change throughout the day and would also prolong the battery life.Overall, I’m very happy with this product. It’s a nice looking, simple and straight forward tool to know the temperature and humidity inside and outside. It worked flawlessly during the week-long evaluation. I will continue to use the device and gain a better assessment of it’s durability.PROS:• Bright, colorful, and easily read display• Very easy set up• Magnets on the back of the base station make for convenient mounting to a metal surface (e.g. refrigerator)CONS:• Batteries not included• Does not measure barometric pressure