I use my smartthings multi-sensor to read the temperature in a room and turn on/off a space heater.
I’ve been looking at the sensor events in the last couple of days, and here are a few observations:
- The temperature reported by the sensor is consistently 2-3 degrees lower than what is reported by a couple of other thermometers in the same room
- The reported temperature has wide variations in small amounts of time, for no apparent reason; for example, last night the sensor reported changes in room temperature from 64 to 66 degrees in a 15 minutes span, without any heating (space heater or central heating) occurring; then temperature jumped back down to 65 a few minutes later, 63 a few minutes later, and back to 64 eventually…
I don’t care much about 1); after all, once I know what the offset between the sensor and the “real” temperature is, that’s a non-problem; but 2) is quite disruptive, and makes for a fairly erratic space heater control… what can cause such large, physically unjustified, swings?