Thermostat vs Sentinel.... 2 different readings!!!

SIC J

Member
Thermostat is reading a temp of 78.8 and humidity of 39/40. But the Sentinel I just put in is reading 70.5 temp and 55 humidity!

I tried a 2nd thermostat and it reads close to the 1st thermostat as well. Both thermostats were like $20 so I'm not sure how accurate they really are but I would never think they would be that far off. I've also been using them for over a year now and never had an issue with the plants being effected by temp or humidity.

What can I try to figure out which is giving the correct reading?
 
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