Product Review: InkBird temperature and humidity bluetooth smart sensor

Monitoring our grow environment can be a game changer! If you’re not considering daytime and night-time temps and humidity – you should.

Temperature and relative humidity have an inverse relationship. So as air temperature increases it can hold more water molecules, and so relative humidity will decrease. And inversely when temperatures drops, the relative humidity increases.

Why does this matter?

This inverse relationship of relative humidity to temperature simply put means that on the overnight as your temp drops – your humidity will rise! Sometimes significantly.

Why does this matter? Well… there is nothing more sad than a fully flowering bud riddled with bud rot due to high humidity and lack of airflow.

The Goal courtesy of grow weed easy:

Now that we know what our humidity and temp should ideally be, How do we know what it is in our grow environment?

This brings me back to this Inkbird bluetooth humidity and temperature sensor… One must monitor our environment to really know. And this handy little bluetooth device does just that.


With a quick download of an app for my phone, look what I can see my temperature and humidity without being in the room!!!

So much WINNING!


I like how it shows battery life, which has done quite well – in the 6 months I’ve owned, it, it started out in my greenhouse monitoring early spring peramaters before being repurposed into my indoor grow space. Despite all the temperature extremes I can throw at it – it still has 65% battery left! Update: battery lasted approx 10 months.

Should you be out of range, the temp and humidity numbers appear grey vs black. It also shows the last reading with the numbers are greyed out while it connects and downloads the latest update.

It does have alerts you can setup that work when you are within bluetooth range, but being bluetooth – they do not work if you are not in range and the app isn’t open.

My favourite feature is the “diagram”  giving you this nifty little visual. If you click on the calendar in the upper right corner, you can switch between daily, weekly, or monthly views.



A very affordable means to track temp and humidity,   So… awesome for when I’m at home, less so for when I’m not.

I definitely like the graph diagram for tracking purposes.

Happy growing!


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