SMARTRO SC42 Professional Digital Hygrometer Indoor Thermometer Room Humidity Gauge Pro Accuracy Calibration
$17.99
Price: [price_with_discount]
(as of [price_update_date] – Details)
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SMARTRO
Once you have it, you’ll love it!
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SMARTRO is devoted to creating the intelligent electronic home and kitchen products such as weather stations, projection clocks and meat thermometers etc.
Equipped with professional technical team and after-sales team, SMARTRO cherishes every feedback and comment on the products so as to get improvement accordingly. Our aim is always to provide the best shopping experience for our customers!
Alarm Clocks & Weather Station
In/ Outdoor Thermometer
Why Choose SMARTRO?
SMARTRO has decades of experience in home and kitchen tools. We pay much attention to the product quality and using experience of our customers.
We have always been providing the best after-sales service, as customers’ satisfaction is our first goal!
What makes our products unique?
SMARTRO has been always looking for the perfect combination of the technology, home and kitchen life. And we have been also committed to developing more excellent products to our customers.
We hope that people who use SMARTRO products can enjoy the efficient cooking method as well as a healthy life.
Product Dimensions : 3.4 x 1.18 x 3.4 inches; 4.59 ounces
Item model number : SC42
Batteries : 2 AAA batteries required.
Date First Available : October 10, 2019
Manufacturer : SMARTRO
ASIN : B07YY1FB9D
Country of Origin : China
The Best Industrial Grade Accuracy: Humidity gauge with built-in Swiss sensors, it detects subtle humidity and temperature changes and updates readings in each 10 seconds. Temperature tolerance is within 0.5℉(-4 to 158℉) and humidity is 2%RH (1 to 99% RH). The digital hygrometer is pre-calibrated for accurate temperature and humidity measurement.
Easy-to-Read Backlit Display: Temperature and humidity monitor with 3.5” large HD LCD screen. A simple touch on the top will turn on backlit for 10 seconds. Clear and power-saving, reading more easily under weak backlit. Reliable operating buttons on the back for manual setting or °F/°C switching. Note: The backlit in the pictures is all in ON state. The backlit is not always on.
24 Hours All-time Max Min Records: The room thermometer displays high and low records for the past 24 hours and All-time; Indoor thermometer measure conditions and identify changes in temperature and humidity instantly. Comfort Indicator ensures proper humidity control, helping you to maintain a comfortable atmosphere in your home.
Wide Applications with More Mounting Options: With a retractable stand, two powerful magnets and a wall-mount hole, this digital thermometer indoor can be easily attached to your refrigerator, wall or placed on a table. Suitable for baby’s room, nursery, office, closet, incubator, greenhouse, garden, wine cellar, basement critter terrarium etc. Note: This thermometer cannot connect to phones.
Calibration Supported: The monitor can be manually calibrated to improve data readings when product placement or environmental factors impact your data accuracy. Powered by 2×1.5v AAA batteries (not included).
Customers say
Customers find the hygrometer accurate and easy to use, with large, easy-to-read numerals that can be seen from across a room. The device displays temperature and humidity updates every 10 seconds, and features a bright backlight that turns on with a push of a button. While some customers describe it as well-made, others report it breaking after a month of use.
AI-generated from the text of customer reviews
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13 reviews for SMARTRO SC42 Professional Digital Hygrometer Indoor Thermometer Room Humidity Gauge Pro Accuracy Calibration
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Ed John –
Great display, appears to be accurate, my new go to
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.Iâm in Florida and have bought dozens of these devices over the past 10 years. These are the best so far.
Stella –
Works well, seems to be accurate!
I bought this hygrometer to verify the humidity in my new humidor. While I havenât 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 canât say anything negative about this hygrometer. As for my humidor, that meter needs replacing, but that is another reviewâ¦
Lil Bit –
One yr later still accurate.
After having this for almost a full yr, here’s an honest review:The problem with anything like this is knowing if they are truly accurate or not.It’s now the end of July’24. I bought a large display clock that also shows date, day and temperatureback in April. It’s one that I can easily read from across the room–even in the middle of the night because it’s backlit.Anyway, I’ve been checking the two against one another. would you believe they are almost always showing the same temperature even though not sitting next to one another, although in the same~ 250 sq. ft. room. I guess that means either they’re both right or they’re both wrong. If wrong, what are the odds they’d both be wrong by the same amount/temperature. I lean towards they’re both accurate!.Now here’s what I don’t like about it:1) It’s back lit –as long as you turn it on, and then it shuts off automatically. The problem with this one, although it has the backlighting, you have to touch the light icon on the top of the frame to turn it on. That means, for example, if you have it sitting on a shelf and you’re in bed, you have to get up out of bed to go touch the light icon to turn the back lighting on so you can see the display. Therefore, it either has to be sitting on the nightstand right next to you, or you have to get out of bed to go touch it to see it in the middle of the night. It runs on two AAA batteries. If I were to have to change the batteries once a yr instead of every yr and half, that would be fine by me to be able to see/read it in the dark. I know some people are bothered by any light in a room, so maybe an option to either have the back lighting always on or always off. The other option would be to have a light sensor and when the ambient light in the room is dark, the light comes on and it goes off when the room gets light again– kind of like the auto adjustment on my laptop.2) Positioning of readouts:The humidity is displayed on top and the temperature is on the bottom. I can’t reverse the positions though I’d like to. I care a lot more about the temperature inside than the humidity and the top figure is easier for me to see at a distance. Living in the PNW it’s always humid to some degree– inside, my home is normally good. If it should get too dry in here during the winter, I tend to know it by the uncomfortable dryness in my nasal passages &/or a sinus headache above my eyes. Anyway, I’d like to have the temperature displayed on top and the humidity on the bottom. or have the choice of which is displayed where.3) Suddenly this evening, a gray shadow has shown up on the display when lit. It covers probably 7/8th of the display surface–only a little at the very top and at the very bottom aren’t affected. However, even with the shadow, I can still read it the display. I don’t know if it’s simply because the batteries are old or if there’s something else causing it. Hold on a sec and we’ll find out. Nope! Not the batteries–something else. Those weren’t even the original batteries I just replaced. Although fresh batteries made the display brighter, the shadow is still there covering most of the display. So it must be something in the digital display itself or the chip for it. Since I bought this in the summer of ’23, the chip could quite possibly be one made during Covid. There have been problems with some chips made during that time when so much of the world’s industries were shut down or running on skeleton crews. Maybe I just need to replace this entire unit instead of the batteries. Although this isn’t one of the least expensive ones, it’s MSRP was $21.95; with a sale price + a 15% coupon, I paid over $15.00 for it—about twice as much as the least expensive ones on Amazon right now. To be fair, they aren’t back lit and this is. Still, I’ve had it for a few weeks under 1 yr and would expect to get more use than that out of any of them.I guess now, my bottom line is:: buyer beware! You may only get ~1 yr’s use. If you want to consider this a throw away and replace it annually, it does appear to be accurate.
Honest Reviewer –
Works good, but did not come with batteries.
It seems to be accurate and updates quickly. However as a side note it did not come with any batteries. It would have been nice if it came with alkaline batteries. That was kind of cheap of them to not add batteries. I hate it when companies get cheap.
JayPee –
Good Device
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.
AmazonThirdEye –
Accurate and Reliable
Accurate, reliable and easy to read
Kitty Mom –
Great for Measuring Humidity
The American Lung Association recommends that indoor humidity levels should be 30%-50%, so I want to keep track of the humidity levels in our house. This does a super job! It can be calibrated, which is great, so you know it is accurate (use the salt test). Most similar devices can’t be calibrated and therefore can be off by 4-5+ percent in their readings. The display is large and easy to see, offering backlit when necessary, The first one I ordered had a problem with the display of 1 number, so I wanted to return it as defective. As soon as I contacted the manufacturer’s customer service (with the help of Amazon), they shipped out a new one, I received it within a few days and it worked perfectly. All in all, I am very happy with the product.
Neosho Valley –
Company Stands By Their Product
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.
Tom –
I brought one checked it via a salt test bang on 75% brought another same as bang on 75%. Very pleased with the accuracy, very easy to use & has a decent magnet to hang up. to verify if your meter is correct put it in a plastic container with a cap filled with salt add a very small amount of water to the salt so you can still pick it up & it doesnât run, seal it properly leave it a full 24hrs and it should read 75% if not itâs out & needs calibration )
Meri –
He tenido muchos de estos y este es muy preciso, además se ilumina al moverlo, vale la pena el dinero q vale.
Adamo –
Working great so far and Iâve had for a few months now. Accurate measure and backlight is very bright but not blinding. Great display and easy to read.
Xavier A –
It didn’t update as quickly as I expected it, but the product is generally accurate. The display is excellent; easy to read and very functional. I love the various features (record high/low, C to F, temperature/humidity trends, and manual calibration), too!
Lorna Yeo –
The product was shipped really well and quick. Overall, really easy to use, just need to install 2 batterys and its good to go. Magnet on the back is also strong, so it sticks well to surfaces. Only thing is that the display picture suggests that the sensor comes with a kickstand, which was not on the sensor when I got it. So if you’re looking for something that has a kickstand, or can stand on it’s own, maybe check with the seller first.