This little chap is a super affordable way to keep an eye on your jungle's health and happiness. This digital 2 in 1 mini thermometer and hygrometer, monitors both temperature and humidity to help you keep an eye on, and create your plant's happy place. This is for the white. Also available separately in black. There's also the Analog 2 in 1 Meter if you're after one without batteries.

Many of our indoor plants prefer things warm and humid, with humidity on the higher side, such as Philodendron (70%+), Monstera (60%+), Calathea and Pothos (50%+). This little digital meter makes it easy to know when your plants need a humidity boost when humidity levels drop (check out the H2O cordless humidifiers if you don't have a humidifier yet, my plants love theirs).


Especially worth keeping a close eye on over winter when cold temperatures combined with indoor heating zaps precious moisture from the air, leaving our plants with dry, crispy tips and edges, even when soil moisture is fine. Also when temperatures soar and plants need more humidity to help cope with the heat. 

Is that price right?

Yep, sure is. Super budget friendly right? Save your pennies for your plants! But at this price, don't go expecting rocket scientist level accuracy. Thermometers and hygrometers can get into the hundreds. However I have been pleasantly surprised that something this cheap actually works really well. 

Portable mini size - just 4.5cm 

They may be mini, but I find the numbers big enough to read easily, even without my glasses on. Plus at 4.5cms tall & wide x 1.5cms deep, the size is great to pop them anywhere and everywhere your plants are.

They are fully portable (no cord), and the battery's included (fits one LR44 battery, supplied). The battery is the same type used in watches and calculators. The photos show you the back with the battery cover removed, showing where the battery goes. The housing is plastic and the display is an LCD screen.

How accurate is it?

I wouldn't make life or death decisions by them, not at this price compared to some of the fancy digital thermometers and hygrometers out there, but they are perfect to keep an eye on general conditions and surprisingly accurate for the price. 

They respond within about 10 seconds to changes in temperature and humidity. In my tests at home I found them accurate to about one degree in temperature, and to about 5% in humidity. 


Temperature is displayed in celsius to one decimal (eg: 20.5 degrees), and the range goes from negative 10 degrees to + 50 degrees. Humidity is displayed in round numbers (eg: 51%), and the range goes from 10% to 99% humidity.

Where can I put it? 

Pretty much anywhere! It's small (measurements above) and fully portable. I have one in each room that I have plants in (I just put them on my plant shelves). They handle high humidity fine based on my own use. Although I have mine inside my prop tank all the time and haven't had any issues myself, the manufacturer does not recommend leaving them inside a grow house or grow tank long-term. Just pop them in to check conditions, then remove. Leaving them in could cause excess moisture to work its way in to the electronics or rust the battery. Once that happens the display might act up or it may stop working altogether. If you go against the recommended use (like I have), just check the unit and battery regularly, discard and do not use if you notice moisture inside the display or rust around the battery, and expect a shorter life.

Important - Safety first

This product uses a button battery so should be kept out of reach of children and pets. Small batteries are a choking hazard. If ingested, there is also the risk batteries may cause burns or tissue damage. If you suspect your child or pet has swallowed a button battery, always treat it as an emergency.