Mahiot 10-Inch Indoor/Outdoor Thermometer and Hygrometer

Inch: The Mahiot indoor/outdoor thermometer and hygrometer is a battery-free analogue wall gauge for reading local temperature and relative humidity. Its dual Celsius and Fahrenheit scale and keyhole hanging slot suit patios, gardens, greenhouses and indoor rooms.

At a glance

Analogue dial displays temperature in Celsius and Fahrenheit alongside relative humidity.
Manufacturer says the mechanical gauge needs no batteries and calibrates automatically within 2–3 hours.
Large numerals and a rear keyhole are intended to make wall mounting and at-a-glance reading straightforward.
The listing describes indoor and outdoor use, including garden, patio and greenhouse settings.

Price

€22.77Save 5%

Reference price: ~~€23.97~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Temperature and humidity appear together without batteries or a digital display.
Dual temperature scales make the dial usable for Celsius or Fahrenheit readings.
The keyhole mounting slot supports wall hanging, and large numbers are intended to aid visibility.

Cons

The analogue display does not provide electronic logging or remote readings, which may not suit buyers who want recorded measurements.

Technical specifications

11 specifications

Identity
Brand	Mahiot
Model	Termometr i higrometr

Readings and operation
Temperature range	-40 to 140℉ , -40 to 60C°
Humidity range	0 to 100%RH
Power	No batteries required

Dimensions and installation
Listed diameter	10-inch
Length	25.4 Centimeters
Weight listed	200 Grams
Mounting	Keyhole on the back

Construction and appearance
Materials	Plastic bottom case, acrylic lens, plastic dial and aluminum pointer
Color	Multi-color

What to know before buying

Listing details to confirm

Listing details are inconsistent: weight is listed as 200 Grams in the specifications and 250 g in the description. The title calls the gauge 10 inches, while the stated length is 25.4 Centimeters. The claimed automatic calibration time and outdoor durability are manufacturer statements, not independently confirmed.

What’s in the box

Included

Indoor outdoor thermometer hygrometer

Who is it for?

A good fit for

People wanting a battery-free wall gauge for local temperature and humidity readings.
Garden or greenhouse users who want a combined Celsius/Fahrenheit temperature dial and humidity display.
Buyers who prefer a large analogue dial for a patio, home or work space.

Less suited to

People who need digital logging, remote monitoring or recorded maximum and minimum readings.

Mahiot 10-Inch Indoor/Outdoor Thermometer and Hygrometer · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 12 ratings

5 stars75%75%
4 stars25%25%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied rating distribution is favourable, with ratings in the four- and five-star categories. It gives no written customer feedback, so it cannot establish what buyers liked or disliked. For a battery-free analogue gauge, buyers should weigh that limited feedback against their need for the stated temperature and humidity readings.

Frequently asked questions

Does this gauge need batteries?

The listing describes it as a mechanical gauge and states that no batteries are required.

What temperature and humidity ranges are stated?

The listing gives -40 to 140℉ , -40 to 60C° for temperature and 0 to 100%RH for humidity.

How is it mounted?

A keyhole slot on the back is listed for hanging it on a wall.

Is the listed weight consistent?

No. The specifications state 200 Grams, while the description gives 250 g. The listing also pairs a 10-inch title with a stated length of 25.4 Centimeters.