Yeah, I didn' repeat all that classification info that is stamped on the barrell of the Browning light. It just seems to me that if it is isolated from the immediate atmosphere, it is isolated from spark ignition.

I live now on the 10th floore of a high rise. Aside from fire, gas, which I take to be closely related to fire, is in this environment the biggest immediate, real threat. This building leaks like a sieve, without ground movement.

This line of discussion makes me curious. I have a number of lights that I know would/could/might might make contact spark with sliding contacts. Rotary contacts I would not think would be any different.

What about the solid state lights like the Photos? I would not think that they are a potential ignition source.

I shall, of course, lie awake with worry over this.