Tossing a new idea into the mix - - - InfraRed Thermal Sensor. I'd imagine it would have a very fast sensing rate. Have that compared to a previous temperature lagging by 2 or 3 seconds - that might be faster than anything I've read so far. Perhaps more accurate. But then again, pointing it at a cold wall then at a warmer wall - you'd get an alarm if the warm wall (or cold wall) were more than the threshold you set by programming.
bot IR sensors and programming are things well beyond my skill level, so I might be completely wrong. But I'll let others consider the IR sensor thing.
bot IR sensors and programming are things well beyond my skill level, so I might be completely wrong. But I'll let others consider the IR sensor thing.