Detail 01
Reads humidity and temperature
Temperature matters because the same moisture reads as different humidity when a case warms or cools.
Product detailSKU #1274034478894
D'AddarioHumidity and Temperature Sensor
Independent shopping perspective
The Korena take
A small digital gauge that reads humidity and temperature inside a case or room. Buy it if you're guessing at whether your humidifier is working.
Strong match
Who this is for
- Checking whether case humidification is actually holding
- Watching a room before storing guitars long term
- Catching a dry spell before the fretboard shrinks
Consider the trade-offs
When to look elsewhere
- Anyone wanting a device that adds or removes moisture
- Players who keep one guitar on a stand and don't track conditions
- Situations needing lab-grade calibrated accuracy
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Digital display
Gives you a number to act on rather than a needle you have to interpret.
Detail 03
Case-sized unit
Small enough to sit in the accessory compartment, so it reads the air the guitar actually sits in.
Detail 04
Measurement only
This tells you the condition. Correcting it takes a separate humidifier or dehumidifying pack.
Final check
Know before you order
- 01No humidifier included — pair it with packets or a case humidifier
- 02Give it time in a closed case before trusting the reading
- 03Battery powered; check it before a long storage stretch
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What humidity should I keep my guitar at?
Most acoustic makers target roughly 45–55% relative humidity. Use the sensor to see where your case sits, then add humidification or drying as needed.
02Does this humidify the guitar?
No. It only measures humidity and temperature. You'll need a separate humidifier or two-way packet system to change the conditions.
03Can I leave it in the case all the time?
Yes, that's the point. Leave it in the accessory compartment and check it when you open the case.
04How long before the reading is accurate?
Let it sit in the closed case for a few hours. Opening the case resets it to room air, and the number takes time to settle.