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Digital Hygrometer

Regular price $28.00 Sale price $24.00
352 in stock
Monitor the humidity levels in your grow room to keep plants from drying out or becoming too moist. Designed with a stand for table top use or a magnet at the back if you wish to have your device attached, this hygrometer is the perfect tool to ensure your indoor garden's success.

Optimized for Growth

Green Thumb Approved

100% Sprout Guarantee

Free 1-3 Day Delivery

Plant Guru Customer Service

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If you grow plants indoors

Keep up with their humidity needs.

Highly accurate and up to date.

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Suitable and recommended for

Tropical Houseplants

Keep the humidity for most tropical indoor plants at 50-60% humidity.

Vegetative Stage of Growing Plants

It is beneficial to maintain the humidity levels at 40-50% during this phase.

Seeds Starting

For seeds to germinate, the humidity level should be high, in the 90-100% range.

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Keep your plants thriving

At a suitable place in your house.

Convenient backlight display.

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3 versatile placement styles.

Display historical MIN / MAX records.

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1 year warranty stars logo

Premium Quality Assured

We stand by our products.

Featured in

"Everything you need to create the perfect indoor growing conditions."

"Extremely impressed by the growth I saw within my plants after two weeks of use."

"All of the seeds that I have planted are growing well. Looking forward to a great garden this summer!"

"It’s great to know that I have back up during the winter months or when the weather is bad."

"Brite Labs offers LED lights that are customizable to individual plant needs."

Frequently Asked Questions

Yes, there is a small button on the back to switch from displaying in Fahrenheit or Celsius.

Batteries are not included. This product uses 2 x AAA batteries.

It resets itself every 24 hours.


Temperature Range -4 to 158°F (-20 to 70°C)
Temperature Resolution 0.1°F / 0.1°C
Humidity Range 20 to 95% RH
Humidity Resolution 1%
Refresh Rate 10 seconds
Display LCD with backlight
Power Supply 2 x AAA battery, 3.0V
Dimensions 97 x 75 x 23.5 mm


Customer Reviews
5.0 Based on 3 Reviews
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Anne J.

worked right accurately out of the box

worked right accurately out of the box. Trying to raise the humidity in a certain area for 'needy' plants!

Michele W.

Extremely affordable and useful

If you need an always-on hygrometer/thermometer on a budget, this is a no-brainer. I've been using it to track the heat/humidity of my indoor basil and lettuce plants growing under an LED light. It's a lot of peace of mind to be able to step into my grow space and get a good read of the temp/humidity at a quick glance and know if I need to make adjustments. If you're doing a similar indoor project, do yourself a favor and get one of these.

Susanna G.

Like this a lot!

This helps me know if the humidity is right for my plants!