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

I've had mine for over a year and it's still going... I've had other battery powered products from a seller and the batteries lasted only a few weeks... It's because the batteries have been installed in that device since the assembly line...If by chance they don't put the little plastic strip between the negative side and the device, the batteries will go bad...

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.

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.

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.

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TempPro TP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor(Previously ThermoPro)

TempPro TP50 Digital Hygrometer Indoor Thermometer Room Thermometer and Humidity Gauge with Temperature Humidity Monitor(Previously ThermoPro)

Product ID: 31915677

Details

Battery Description
AAA
Brand
TempPro
Color
White
Item Weight
0.06 Kilograms
Product Dimensions
0.84"W x

💧±2-3% RH precision

⏱️10-sec refresh rate

🌡️±1°F accuracy

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Description

🌿 Stay ahead of the curve with TempPro — your personal climate guardian!

VERSATILE PLACEMENT - Magnetic back and tabletop stand for seamless integration anywhere.
INSTANT WELLNESS CHECK - Humidity level icons (DRY/COMFORT/WET) keep your space perfectly balanced.
HEALTH FIRST MONITORING - Maintain ideal humidity for skin, allergies, and even specialty uses like humidors or reptile tanks.
PRECISION YOU CAN TRUST - High accuracy readings ensure your environment is always optimized.
TRACK TRENDS EFFORTLESSLY - High/low records let you monitor changes and improve your home’s air quality.

The TempPro TP50 Digital Hygrometer is a compact, highly accurate indoor thermometer and humidity monitor with ±1°F temperature and ±2-3% RH humidity precision. Featuring a quick 10-second refresh rate and intuitive humidity level icons, it helps you maintain optimal indoor air quality. Designed for versatile use with a magnetic back and tabletop stand, it’s perfect for homes, greenhouses, humidors, and more. Trusted by over 150,000 users, it’s the #1 choice in indoor thermometers and hygrometers.

Specifications

ASIN	B01H1R0K68
Battery Description	AAA
Best Sellers Rank	#39 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Weather Hygrometers #1 in Indoor Thermometers
Brand Name	TempPro
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (154,233)
Global Trade Identification Number	06927082801612
Included Components	Temperature and Humidity Monitor,One AAA battery,User Manual
Item Dimensions W x H	0.84"W x 2.62"H
Item Length	2.62 Inches
Item Type Name	Digital Hygrometer Indoor Thermometer Humidity Monitor with Temperature Humidity Gauge
Item Weight	0.06 Kilograms
Manufacturer	TempPro
Model	Digital thermometer hygrometer TP50
Mounting Type	Tabletop
Operating Humidity	10% ~ 99%
Part Number	TP50
Smart Home Compatibility	Not Smart Home Compatible
Temperature Accuracy	1 Degrees Fahrenheit
Temperature Reading Accuracy	plus_minus_0_point_6_degrees_celsius
Unit Count	1.0 Count
Upper Temperature Range	158 Degrees Fahrenheit
Voltage	1.5 Volts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$24.59

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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