I think I know where you're headed with that question. The box said Blazecut deployed at 220 degrees. I took it on a 100 mile drive this morning and kept expecting it to happen. My oil temp reached about 200 as I cruised between 75 and 80 for more than an hour. No problem 😊👍.
I'd been recently thinking about the BlazeCut T100E @ 39.37" length. What's pretty much sold me on this unit is it utilizes a "clean" extinguishing agent that is claimed to be similar to Halon (banned in the US) and Halotron (my Amerex extinguisher). I'm MOST impressed with the description claiming this agent leaves no residue that would otherwise make an even bigger mess in the engine compartment. The T100E model specs go on to state the system detonates "when Temps inside the protected enclosure rise above a critical threshold of 120C/248F. I do acknowledge that's damned hot, but returning from last year's West Coast Cruise I was tortured by driving hard for 250 miles in 106F heat. More than once I noticed the oil temp "pegging" all the way, so I pulled over, opened the lid, and let the compartment "cool" with the 106 degree air. So-o-o, I really don't think I'm being overly paranoid being a little concerned with a BlazeCut exploding without flames erupting.