SMARTRO SC42 Professional Digital Hygrometer Indoor Thermometer Room Humidity Gauge Pro Accuracy Calibration

Most of these devices seem to use the same screen layout. I chose this one because the numbers are big and bold and easy to read. It has a soft touch light control on the top - just touch it gently and it lights up. It has two strong magnetics. This one is attached to my fridge.In the description, it states the device is calibrated. I assume using international standard of calibration? I have no idea.However, most of the time it matches or is within one tempt degree of my furnace thermostat and my other brand new hygrometer (Acurite). The humidity reading matches the Acurite. I decided to use two different companies for comparison.To conclude, I like the device and would recommend it.

Great unit! You can actually calibrate these as far as humidity goes. Seem to be fairly accurate and easy to read.

It works, I like it can be calibrated

I love the SMARTRO SC42 Professional Digital Hygrometer Indoor Thermometer. It tracks humidity and temperature accurately and provides high and low figures to show the range, along with a colored bar that indicates whether the current levels are Low, OK, or High. Living in Colorado, where it's quite dry, this monitor has been invaluable for keeping track of the humidity in my room to ensure that I run my humidifier just the right amount. The clear display and easy-to-understand indicators make it a fantastic tool for maintaining a comfortable environment. I also like that when you touch the screen, it turns on a backlight for times when viewing in the dark. Whether you're concerned about temperature or humidity, this monitor give you all the information that you need at a glance at a bargain price.

Nice display, like the 24 hour high/low reading, very sensitive to humidity changes, great price, arrived fast

Great display. Seems to be accurate. My new go to for humidity monitoring.The first order I got (2 items) one of the screens was dim. The replacement arrived in no time at all and it was in perfect working condition.I’m in Florida and have bought dozens of these devices over the past 10 years. These are the best so far.

I bought this hygrometer to verify the humidity in my new humidor. While I haven’t performed a salt test to verify the accuracy of this meter, I did place it next to both my ac/heat controls and both the temperature and humidity were spot on for all three instruments. The response time for this meter is a few seconds.This meter works as described. You can adjust the calibration if needed. The directions are simple and clear. I really can’t say anything negative about this hygrometer. As for my humidor, that meter needs replacing, but that is another review…

The display is bright and easy to read. I haven't run a calibration (which it is capable of) but from my experience, the accuracy feels right on. I use this in an egg incubator and it works great. After purchase last December, I didn't hatch any eggs right away. In late February, we set up the incubator with the thermometer/hydrometer inside. Everything started fine but before the 21st day, segments of the hydrometer faded out. I EMAILED THE COMPANY WITH MY PURCHASE INFORMATION NEARLY 4 MONTHS AFTER BUYING IT ON AMAZON AND THE CUSTOMER SERVICE REP'S REPLY WAS "WE'VE MAILED A NEW UNIT TO THE ADDRESS IN YOUR EMAIL." There were no questions, no photos required, no returns; nothing, just great customer service! I think I have a winner here and if needed, I will absolutely purchase one of these again.