George Haeh wrote on 10/10/2020 2:46 PM:
How about a battery powered home smoke detector?

I don't know how it would respond to the high temperatures in the engine bay during normal
operation (ambient temperature in summer + engine heat), or the effect of air turbulence on the
detector, so I suspect it'd take a lot more testing than I'm interested in doing.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1