And this is what Marioff say on Linkedin:
"We’re now FM Approved for HC-2 / HC-3 with a 68°C activation temperature — and let’s be clear: no other water mist system has this.
And that’s not a marketing detail — it’s how FM Approval actually works.
Activation temperature must be tested and approved, not assumed.
Why it matters:
68°C aligns with hyperscale cooling strategies — higher ambient temps without compromising protection
Reduced risk of false activation — protecting uptime where it really counts
Fully FM Approved — tested, verified, no shortcuts
Add low water usage and faster recovery, and the gap is pretty obvious.
Backed by 40+ years of experience in high-pressure water mist, this isn’t theory — it’s proven.
If you’re designing for hyperscale, you can either follow assumptions… or go with what’s actually approved."
For more information visit: www.marioff.com/en/