I have RuuviTag outside my house and use it to measure temperature. This morning it showed +22 C reading while the real outside temperature was -18 C. I went outside and picked up the Tag and heated it with my hands. No change in reading. Then I went inside and heated it more. No change in the reading.
All this time my RuuviScanner application showed that readings were being updated constantly so this was not due to communication problems.
Removing battery and putting it back of battery solved problem.
Maybe the battery is going to be dead soon. A battery from my another RuuviTag died about month ago. And I had kept it inside my house.
Anybody had same issues?