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Black 10 inch round wall thermometer hygrometer with large dual-scale dial

10" Indoor Outdoor Thermometer Hygrometer Black

SKU CH-2PNG-7HVNM

Battery-free 10-inch dial shows temperature from -40 to 60°C and -40 to 140°F plus humidity up to 100% RH, auto-calibrating within three hours for indoor or outdoor hanging

  • Product colorBlack
  • Battery-free operation with built-in sensor auto-calibrates within three hours
  • Dual-scale display covers -40 to 60 °C and -40 to 140 °F
  • Humidity range spans 0 to 100 % RH for any climate
  • Bold 10-inch numerals readable from across the room
  • Rear hang holes suit greenhouse, patio, office or balcony

10-Inch Battery-Free Hygrometer

This 10-inch thermometer and hygrometer operates without batteries using built-in sensors. It automatically calibrates within three hours to match local conditions. The large black numerals on the dial allow clear temperature and humidity readings from a distance. It is suited for homeowners, gardeners and facility managers who need a simple wall-mounted monitor.

Sustained Outdoor Operation

The unit covers a temperature range from -40 to 60°C and -40 to 140°F with a humidity range of 0 to 100% RH. Automatic calibration keeps readings aligned over long periods without manual adjustment. If drift occurs the device can be recalibrated by placing it in a refrigerator for two hours or by using the rear adjustment hole. No power source means continuous operation without battery changes.

Pre-Installation Checks

Verify that the mounting surface can accept a hanging fixture using the holes on the back of the unit. Confirm the 10-inch diameter fits the intended wall space in greenhouses, patios, warehouses or laboratories. Ensure the operating ranges of -40 to 60°C and 0 to 100% RH cover the expected conditions at the installation site. No electrical wiring or battery compartment access is required.

How it compares

Measured against everything we stock in Digital Thermometers & Hygrometers, at today’s prices. Recalculated every night.

Price $25.99
Pricier than about 57% of the 925 comparable items (median $23.99).

Specifications

Product
Product colorBlack

Questions about this item

Does the 10" thermometer need batteries or mains power to run all day?

No batteries or mains power are required; the built-in sensor operates continuously without an external supply.

What mounting hardware must I already have to hang this thermometer?

The unit has holes in the back for hanging; you only need screws, nails or hooks suited to your wall surface.

Will the -40 to 60°C range still read correctly next to an older mercury thermometer I keep?

Yes, the dial covers -40 to 60°C and 0 to 100% RH, so it overlaps the range of traditional mercury models for direct comparison.

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