Overview of the thermometer-hygrometer with large display and backlight
Controlling the temperature and humidity in the room, to understand how comfortable the environment is, is a very useful task. Data can be obtained using a variety of small thermometer-hygrometers. It is useful when such instruments are equipped with additional functions, for example, they have a backlight, they can display the minimum and maximum recorded values, and also show the time. One such option will be discussed in this review.
The device comes in a simple, unmarked, thick cardboard box, although the product page mentions that the thermometer-hygrometer has some relation to the Xiaomi family (although it does not have any “smart” functions and Bluetooth 🙂
The package contains the device itself and instructions in English:
The device is a flat square box with a large LCD display:
On the display, on the inside of the glass, some designations are painted, and under the display there is a backlight touch button:
I note that in this device, perhaps, the largest display of all compact thermometer-hygrometers that are now sold, a diagonal of 9.5cm:
On the reverse side there are four control buttons, a battery compartment cover, a folding stand and a loop for hanging the device:
Intake openings for outside air are located on the sides:
Characteristics of the thermometer-hygrometer:
- Power supply: 2xAAA batteries
- Temperature measurement range: ‑9.9°С +60°С
- Humidity measurement range: 0% ~ 99%
- Display type: LCD
- Display Diagonal: 9.5cm
- Time display type: 12/24H
- Degree display type: С°/F
- Data update rate: 10 sec.
- Backlight working time: 15 sec.
To gain access to install the batteries, you need to open the stand and remove the cover:
After installing them, the device performs a self-test of the display:
Using the buttons, you can set the date-time, switch the display between degrees Celsius and Fahrenheit, and while holding the “C ° / F” button, reset the minimum and maximum values \u200b\u200bof temperature and humidity for the last 24 hours. The numbers on the display are large and easy to read. In addition, on a colored strip, a small triangle displays the degree of comfort of the environment (by measuring humidity):
When setting the time, you can select the display mode 12/24:
The LCD display is very high quality, the numbers are visible even at large angles…
… and read well under direct light:
When the stand is folded down, the device stands steadily on a horizontal surface:
By touching the sensor under the display, turn on the backlight:
The display lights up for 15 seconds. The backlight function is very useful at night. Here’s how it looks in the dark, it doesn’t shine very brightly so as not to blind the eyes, but it is enough to clearly see the numbers on the display:
I will add that the data refresh rate on the display of the review device is about 10 seconds, which is very good, because. some models of such thermometers-hygrometers do this once every 30 seconds, or even less often.
Comparison in terms of measurement accuracy with other models, of which I have quite a lot + multimeter temperature probe. The readings of the review device practically coincide with other devices both in temperature and humidity:
To check the possibility of fixing negative values, I put the device in the freezer:
Minus values shows up to ‑9.9 ° C, then the LL icon is displayed, and at lower temperatures the display freezes and stops displaying values:
After returning to heat, operation is restored, and “LL” is displayed in the minimum recorded value field.
You can buy a thermometer-hygrometer with a large display and backlight on AliExpress HERE
In general, I liked the device, I am glad that manufacturers add new useful features to such devices, for example, backlighting. The build quality and workmanship of the survey thermometer is excellent, the display is large, the accuracy and frequency of data updates are good, you can see the minimum and maximum values of temperature and humidity, as well as the time and date.