HOBYLUBY Large Outdoor Thermometer Hygrometer — Dark Green 9.8" Dial, Battery-Free & Weatherproof

The HOBYLUBY Large Outdoor Thermometer Hygrometer is a battery-free, weatherproof wall gauge with a 9.8" dial that shows temperature in °F/°C and relative humidity for outdoor and indoor monitoring.

This decorative yet functional gauge combines a large, easy-to-read face with a built-in, high-sensitivity sensing mechanism so you can check temperature and humidity at a glance. Designed with a gecko motif in dark green and a strong waterproof casing, it works in gardens, patios, greenhouses and many indoor spaces. Two calibration options — automatic and manual — let you keep readings accurate without needing batteries or complex setup.

How accurate are the temperature and humidity readings?

The HOBYLUBY gauge uses a special copper sensing plate and sensitive movement to deliver reliable environmental readings across a wide range. It displays temperature from -40°F to 140°F (-40°C to 60°C) and humidity from 0–100% so you can track extreme and everyday conditions.

• Temperature range: -40°F to 140°F (-40°C to 60°C)
• Humidity range: 0–100% relative humidity
• Dual-scale dial with both °F and °C markings for quick comparison
• Built-in copper plate sensing for responsive measurements

Do I need batteries or special maintenance?

No batteries are required — the unit uses a high-sensitivity mechanical movement that self-calibrates in 1–2 hours. If desired, manual calibration is possible by turning internal gears to fine-tune readings without downtime.

• Battery-free operation through mechanical sensing
• Automatic calibration after initial warm-up (1–2 hours)
• Manual calibration option for instant adjustment
• Low upkeep: wipe the case clean and check mounting adhesive periodically

Where can I mount this thermometer and how weatherproof is it?

The HOBYLUBY unit is built for both covered outdoor spaces and indoor locations: balconies, greenhouses, garages, nurseries, porches, and living rooms. The housing is designed to resist moisture and normal outdoor exposure, but mounting under an overhang will extend longevity in harsh climates.

• Suitable for balconies, gardens, greenhouses, and interior rooms
• Weather-resistant housing for everyday outdoor use
• Includes black adhesive tape to secure the dial when hanging
• Recommended: sheltered placement for prolonged exposure to storms

What comes in the box and is assembly required?

The package contains the dark green gecko-themed dial, mounting hardware and adhesive tape; the thermometer requires straightforward self-assembly with step-by-step instructions included. Assembly is simple and mainly involves securing the face and attaching the mounting bracket or tape.

• 9.8-inch dial with gecko design and large numerals
• Mounting accessories and black adhesive tape included
• Clear, illustrated assembly guide supplied with the product
• Quick setup — suitable for nontechnical users

Who is this for: HOBYLUBY's large outdoor thermometer hygrometer is ideal for gardeners, greenhouse operators, homeowners with patios or balconies, and anyone who needs an attractive, easy-to-read environmental gauge without the fuss of batteries or frequent maintenance. It also makes a thoughtful, practical gift for parents, hobbyists, and plant lovers who value reliable temperature and humidity information paired with decorative flair.