I wonder why it shows only even numbers for temperature. I've seen the same complaint by others. I put a fresh Eveready alkaline battery, same thing.

I have 4 units of the AcuRite 00325 thermometer and not a one ever shows even numbers for Fahrenheit temperatures, e.g., 72, 68. They only show odd numbers, e.g., 73, 75, 77, 79, 81. I've never set them to Celsius.

One AA alkaline battery, ideal. Size is one of most commonly available. Lasts longer than AAA. Many similar portable digital humidity-temperature devices use smaller button batteries, which are less available and more problematic to replace correctly.

Does it display historically highs and lows, or only from the last day or so?

It resets every 24 hours from when you put in the battery. I deliberately pulled the battery one night so that the data would reset for each day when I wanted it to.

I'm thinking of using this hygrometer to keep track of the humidity in my acoustic guitar's case. Do you think it would work well for this purpose?

I keep one in my guitar case, one in my banjo case, and one in the room I play music in (for when the instruments are not in a case). You may have to play with the geometry a slight bit to find the best place to put it in the instrument case but they work well for that purpose.

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AcuRite Thermometer & Hygrometer with Humidity Gauge, Magnetic Only

AcuRite Thermometer & Hygrometer with Humidity Gauge, Magnetic Only

Product ID: 309857

Details

Battery Description
Alkaline
Brand
AcuRite
Color
Black
Item Weight
0.19 Pounds
Product Dimensions
2.5"W x 3"H

📊24-hr high/low tracking

🧲Magnetic & tabletop versatile

🌡️±1°C accuracy

Description

🌿 Stay ahead of comfort—know your indoor climate like a pro!

TRACK DAILY EXTREMES - Monitor your room’s 24-hour high and low temperature and humidity levels to stay ahead of comfort fluctuations.
FLEXIBLE PLACEMENT ANYWHERE - Sleek, compact design with a strong magnet and tabletop option for seamless integration into any workspace or living area.
LONG LASTING USER FRIENDLY - Powered by a single AA battery for hassle-free maintenance and designed for simple operation with one button toggle.
PRECISION COMFORT MONITORING - Get reliable temperature and humidity readings with ±1°C accuracy to optimize your indoor environment.
INSTANT INDOOR CLIMATE SNAPSHOT - Easy-to-read digital display with humidity comfort icon keeps you informed at a glance—no guesswork needed.

The AcuRite Thermometer & Hygrometer offers accurate indoor temperature and humidity monitoring with ±1°C precision, a versatile magnetic and tabletop design, and a clear digital display featuring a humidity comfort icon. It tracks daily highs and lows over 24 hours, powered by a single AA battery for long-lasting use. Ideal for bedrooms, offices, and specialized environments like wine cellars, it delivers essential climate insights to optimize your space’s comfort and health.

Specifications

ASIN	B004K8RF10
Battery Description	Alkaline
Best Sellers Rank	#42,908 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #112 in Indoor Thermometers
Brand Name	AcuRite
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (7,646)
Global Trade Identification Number	00072397003254
Included Components	Digital hygrometer and thermometer, instruction manual
Item Dimensions W x H	2.5"W x 3"H
Item Length	3 Inches
Item Type Name	AcuRite 00325 Indoor Thermometer & Hygrometer with Humidity Gauge, Black
Item Weight	0.19 Pounds
Manufacturer	AcuRite
Model	00325
Mounting Type	Tabletop
Operating Humidity	20-95 percent RH
Part Number	00325
Smart Home Compatibility	Not Smart Home Compatible
Temperature Accuracy	1 degree Celsius
Temperature Reading Accuracy	plus_minus_1_degree_celsius
UPC	885514226845 776135046373 885846255520 885469659033 723434309821 072397003254 737508178770 737946424859 707568286845 043941097098 885321675393 885429360504 885609956640 885220160440 885569298422 745176863300 732233466956
Unit Count	1.0 Count
Upper Temperature Range	122 Degrees Fahrenheit
Voltage	3 Volts
Warranty Description	1-year limited warranty.

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