In China. I bought 3 of them, but don't find them useful. The setting for humid, dry, comfort is inaccurate for a relativity level reading in a home environment. At least in the Midwest region. They say 49% is dry when in fact it's too much for a home to carry, at least in the winter colder temps.

ThermoProTP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor

ThermoProTP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor

Q: Any way to calibrate temperature?

Calibrate means that you adjust your measuring tool (e.g. thermometer, hygrometer, speedometer, etc.) to give a known value when it's measuring (detecting) that value; you usually do this by adjusting a screw or other mechanism that results in the unit showing a 'reading', or measurement, of that known value on its display or output. This unit does NOT have any calibration adjustment.

Q: What do the low and high represent...is it for the last 24 hours?

As several others have said, it's the HIGH & LOW since it was reset. To reset, HOLD the button marked F/C until it resets. Each time that button is pressed, the displayed temperature changes between Fahrenheit and Celsius.

Product ID: 31915677

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Details

Color
White
Brand
ThermoPro
Product Dimensions
0.84"W x
Item Weight
2.72 Ounces
Battery Description
AAA

💧±2-3% RH precision

⏱️10-sec refresh rate

🌡️±1°F accuracy

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ThermoPro TP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Monitor

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Description

🌿 Stay ahead of the climate curve with ThermoProTP50 — your smart indoor air guardian!

REAL TIME UPDATES - Data refreshes every 10 seconds, so you never miss a beat on temperature or humidity fluctuations.
HEALTH HOME HARMONY - Maintain optimal humidity for skin, allergens, and overall wellness—because your space deserves the best.
PRECISION YOU CAN TRUST - High accuracy readings within ±1°F and ±2-3% RH ensure your indoor climate is always perfectly monitored.
VERSATILE PLACEMENT USE - Magnetic back and tabletop stand let you position it anywhere—from fridge to greenhouse to humidor.
INSTANT AIR COMFORT INSIGHT - Quick-glance humidity icons keep you effortlessly in tune with your environment’s DRY, COMFORT, or WET status.

The ThermoProTP50 is a compact, highly accurate digital hygrometer and thermometer designed for indoor use. Featuring ±1°F temperature accuracy and ±2-3% relative humidity precision, it updates readings every 10 seconds. Its intuitive air comfort indicator and versatile mounting options make it ideal for maintaining a healthier home environment, protecting valuables like cigars, or monitoring specialized spaces like greenhouses.

Specifications

Color	White
Brand	ThermoPro
Product Dimensions	0.84"W x 2.62"H
Item Weight	2.72 Ounces
Battery Description	AAA
Mounting Type	Tabletop
Upper Temperature Rating	158 Degrees Fahrenheit
Voltage	1.5 Volts
Temperature Accuracy	1 Degrees Fahrenheit
Manufacturer	ThermoPro
Global Trade Identification Number	06927082801612
Part Number	ThermoPro
Item Weight	2.72 ounces
Item model number	Digital thermometer hygrometer TP50
Batteries	1 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Size	Classic
Material	Plastic
Shape	Rectangular
Power Source	Aaa Battery （included）
Item Package Quantity	1
Number Of Pieces	1
Measurement Accuracy	1
Display Style	Digital
Special Features	High accuracy 2~3%RH and ±1°F
Included Components	Temperature and Humidity Monitor,One AAA battery,User Manual
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Zinc Carbon
Description Pile	AAA

Have a Question? See What Others Asked

Has anyone had this long enough to know if the battery will last at least one year?

Any way to calibrate temperature?

What do the low and high represent...is it for the last 24 hours?

is this made in usa

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