@JohnS. 

JohnS. wrote

We NEED calibration setting on these things. Please Tapo team!

I agree, placed two sensors, one new, inside a sealed container with a known humidity source, one sensor reads correctly, the older sensor by 6 months, is reading between 4% and 5% higher relative humidity.

There needs to be the ability to add an offset to account for the error.

  @I have a t315 sensor and I notice that the humidity measurement shows a difference of plus 7%. This means that my different humidity meters show 63% humidity and the t315 shows 70% humidity. All three sensors that I used for comparison are from different series and are not Smart. Two of the sensors cost €20 each and one was a little cheaper at €10. So from that point of view it would be good to implement a calibration function for the t310 and t315 series. 

Agree, urgently needed.

I got a number of ThermoPro non-smart Sensors around the house and they agree on Temperature and Humidity in any given location ... with the T315s constantly showing 5-10% higher humidity in the same spot.

  @SchlitzAfter removing the battery compartment cover of the t-315, the accuracy of the humidity 

the  different now is ca. 4-5% Plus 

Bevor removing the different is 6-8% Plus

Please add this feature

  @Schlitzkasten1 Hi, Thanks for the suggestion ... I tried and took a picture after a few hours - it improved a bit but I'd say not so much as for the T315's to be considered really useful for now.

  @UdoCologne 

Hello, you're right, it's not what you would expect, the difference is also in this range with my t315 device. I also notice that the t315 is very slow when measuring humidity. I have no complaints about the temperature display/measurement

Have a nice day