




Product description
Newlight66 Temperature & Humidity Monitor

Newlight66 Temperature & Humidity Monitor
With a face icon indicator to show the comfort level and compact size, this mini thermometer hygrometer is used in many locations such as a nursery, greenhouse, cellar, and incubator.

Product Details
Fahrenheit (°F) display, this thermometer displays temperature in FahrenheitTemperature measuring range: -58℉-158℉ ; Humidity measuring range: 10%-99%RH (Measures conditions every 10 seconds)Temperature measurement accuracy: ±2℉; Humidity measurement accuracy: ±5%RH

Product Size
Operating Voltage: 1.5V, two button cell size LR44(Include)Material: PVC plasticSize: 1.96in x 1.18in x 0.59in / 44mm x 44mm x 15mmWeight: 0.6oz / 25gColor: Black

Fahrenheit (°F) display
Fahrenheit (°F) display, this thermometer displays temperature in Fahrenheit

suitable place
This portable hygrometer thermometer Measures Indoor humidity and temperature in time, help to adjust the humidifier, dehumidifier settings and humidistats, great for monitoring family‘’s living conditions and health by preventing colds, dry skin, asthma, mold.humidor hygrometer
Customer Reviews
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4.2 out of 5 stars 866
Color
Whtie-3PCS Whtie-5PCS Black-5PCS Whtie-1PCS Black-12PCS
Number of Batteries
CR2032 battery(Include) CR2032 battery(Include) 1 LR44 batteries required. (included) CR2032 battery(Include) 2 LR44 batteries required. (included)
Product Dimensions : 1.96 x 1.96 x 1.18 inches; 9.59 ounces
Item model number : SD-3013-12
Batteries : 1 LR44 batteries required. (included)
Date First Available : March 7, 2019
Package Contents:12 Pack (Included Battery )
Fahrenheit (°F) display, this thermometer displays temperature in Fahrenheit
Temperature measuring range: -58℉-158℉ ; Humidity measuring range: 10%-99%RH (Measures conditions every 10 seconds)
Temperature measurement accuracy: ±2℉; Humidity measurement accuracy: ±5%RH
This portable hygrometer thermometer Measures Indoor humidity and temperature in time, help to adjust the humidifier, dehumidifier settings and humidistats

Ken –
Work great. Pretty accurate.
Great little hygrometer . Quality 💯.
Russ Desroches –
Stash jar equipment
Great to make sure humidity is right in your stash jars.
Cam –
They work fine
Work as expected. They are all within a percent or two of each other, I didnt buy these for lab accuracy but for the size and ease of use. Just open the box and bam its on, just look at it to tell temp and rH.
Töm in CNY –
comes with batteries. Most within about 1% of humidity and a half a degree on temperature.
** Update: I have since been able to group these with my other hygrometers. It would be more accurate to say that this group is more consistent. But I would say that the temperature is high by about 3°. End update***I’ve bought these in 12 packs previously. This package seems to be more accurate than the bunch I bought last time from a different seller. They come with plastic tabs to keep the batteries from draining. I have seen these sold on Temu for less. However, I realized they weren’t coming with batteries. So if you’re shopping around, that’s another thing to consider. Overall, I’m very happy. With coupon these were about $1.75 each. October 2023.
Brave Allegory –
Inaccurate humidity levels
Pros- Size, cost and batteries included.Cons- If you set them next to each other, the humidity readings are vary around 5%.
Amazon Customer –
Very fun and useful.
My plants and I are loving the data…well, maybe they don’t directly appreciate it, but they are healthier as a result of my increased awareness. The sheer number of these bad thangs that come in the package has me slinging them all over the house. Even got some directly in the pot, which has helped me realize there’sa huge difference in the ambient humidity and the in-pot humidity of healthy plants. My best plants seem to like 15-22 units of humidity more than is in the room.Paired with the 3-in-1 soil tester (assuming sold by a different seller) I’m feeling more aware and comfortable in knowing what plant’s want.
ADKZAAZ –
Ya get what you pay for….
Edit: Checked accuracy again, half using the Boveda 75% calibration pack, and the other half using the more common wet salt test. Both sat for 22 hours @67 degF. The Newlight66 are ALL reading at least 11% low (60-62%). I also put a Govee meter in each bag and they were both at 75% +/- 0.4%. If you want to use the Newlight66 meters to control humidity on something important, like expensive cigars, expensive musical instruments, or medicinal herbs, don’t waste your time or money.I put all 12 Newlight66 hygrometers into a gallon ziplock bag and put that into a small cardboard box under my bed for 17 hours. Also in the bag were a calibrated Fluke 971 meter and two bluetooth Govee meters. The Govee meters and the Fluke all showed the temp was 63.1 DegF +/- 0.8, and humidity of 69% +/- 2.0%. Seven of the Newlight66 devices seem “somewhat” useful, meaning they aren’t too far off (temp +/- 4 degF, humidity +/- 5.4%). The other seven are WAY off! They are all showing a temperature of ~81 deg, and the humidity levels seem to be stuck at 60-61%, even after removing them from the bag. I’ll be returning them. Typical cheap imported junk.
Kentucky Guy –
Great little gauge at a great price
I stick these inside of my 3D printer filament driers, to monitor the humidity and temperature of te filament.
Damien –
Overall not good experience
AnaC –
Excelente calidad vs precio