Story: Even in a cold winter it’s recommended to ventilate rooms for a few minutes daily. Sometimes we open a window and forget about it, and then it gets very cold in a room.
One of my plans with buying a Ruuvi tag was to detect this and send an alert that the room is getting too cold. But it’s not working because of a seemingly very slow reaction time.
Example 1: Room temp 23°C, I put the Ruuvi tag in a fridge (this is safe, right?), the fridge’s own display shows 5°C. After about 15 minutes, the Ruuvi is still only down to 14°C. I think this is very very slow.
Example 2: Room temp 21°C, we have a digital thermometer in the room, and a Ruuvi tag stuck on the wall. We open the window. In 5-10 minutes, I can feel on my body that the air is very cold. The digital thermometer shows 13°C. The Ruuvi tag didn’t move at all, still showing 21°C. I wait 5-10 more minutes, still nothing, so I close the window. Then it takes well over 30 minutes to heat the room back to the original temperature, and all the time Ruuvi keeps showing 21°C. Given that the digital thermometer reacts almost instantly, the Ruuvi’s zero response is actually very concerning.
Is this behavior expected?