It's a game changer if you buy it just for the hygrometer it's great but using the smartphone app is a game changer and it is easy, just bluetooth as if you have headphones or other bluetooth device used, no matter where i am or what i am doing in the house, i can check the temperature and humidity in my grow tent, the application has graphs that give you the maximum pro show day at least per day it also shows you a chart for the past week for the last month for the past year. It's a totally cool game changer when detached from your favorite hygrometer. It's so easy to calibrate that it's so user friendly I'm fat because I don't have to check my grow tent every time I think about it. I just look at my app and I know exactly what my conditions are, with groundbreaking precision.
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