Can be used to check the water for a baby bath?

I dont see why not, however any electronic device could fail so you need to take precautionsand be vigilant in case the device fail on an unexpected way. Always double check readings and use an elbow in the water as a referance. Always be on your guard as an accident can be very serious.

Are these suitable for measuring the freezer temperature using the probe - so temperatures as low as -30 degrees C?

Hello, you can use the probe to measure the temperature of the freezer compartment as low as -30 degrees Celsius, but it is not recommended that you keep the thermometer and probe at this temperature for a long time, because this will reduce the battery life of the thermometer.

Could these be used in guitar cases to measure humidity?

These are just thermometers for temperature only. What you require is a hydrometer a different device entirely but there are probably small ones available. I am sure there are combined ones with both humidity and temperature displays.

Is there a way to calibrate the thermometer. mine shows 96.5 deg. c in boiling water at 100m above the sea level. it should be 99.7. how can i adjust?

Boiling temperature depends on atmospheric pressure. Pressure may rise and fall as much as 50mb with changes in weather. At 100m pressure is about 11mb less than at sea level. So low atmospheric pressure may be at least part of the explanation.

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Fridge Thermometer

Product ID: 153614283

Details

Age range (description)
baby
Brand
Thlevel
Colour
4x Black
Display type
Digital
Included components
Stack
Outer material
Metal

📏Compact 48x28x15 mm size

🔋Long-lasting 2x LR44 batteries

🌡️Wide -50℃ to +110℃ range

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€ 25.08

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌡️ Stay ahead of the curve with precision you can trust!

VERSATILE USE ANYWHERE - Perfect for refrigerators, counters, vivariums, and indoor climate control
SLEEK DISCREET DESIGN - Modern, minimalist look that doubles as stylish room decor
PORTABLE USER FRIENDLY - Lightweight, easy to place, and clear digital display for quick reading
MOISTURE RESISTANT DURABLE - Built to withstand humid environments without losing accuracy
PRECISION AT YOUR FINGERTIPS - Accurate ±1.0℃ readings for reliable temperature monitoring

The Thlevel Digital Thermometer with Probe offers a broad temperature range from -50℃ to +110℃ with ±1.0℃ accuracy, housed in a compact, moisture-resistant metal body. Powered by two LR44 batteries, it’s designed for versatile indoor use—from refrigerators to vivariums—combining reliable performance with sleek aesthetics to seamlessly fit any modern space.

Specifications

ASIN	B07TY6HRL4
Age Range Description	baby
Best Sellers Rank	6,173 in Garden ( See Top 100 in Garden ) 32 in Thermometers & Meteorological Instruments
Brand	Thlevel
Colour	4x Black
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (8,378)
Display Type	Digital
Immersion Depth	100 Centimetres
Included Components	Stack
Indoor Outdoor Usage	Indoor
Item Length	4.8 Centimetres
Manufacturer	Thlevel
Manufacturer Part Number	188048
Model Name	Termómetro Digital Mini
Model Number	188048
Number of Batteries	2 LR44 batteries required.
Outer Material	Metal
Power Source	Battery Powered
Product Care Instructions	Freezer Safe
Resolution	0.1 °C
Reusability	Rechargeable
Special Features	aquarium thermometer, freezer thermometer, fridge and freezer thermometer, refrigerator thermometer
Specification Met	CE
Style Name	Contemporary
Unit Count	1.0 count
Upper Temperature Rating	70 Degrees Celsius

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