F&G detectors acronym ASH, YSH, USH, OSH

[Guest carlos.bento3@hotmail.com]

I find a lot of labeling on fire and gas detectors, does anyone knows the acronym of it (ASH, YSH, USH, OSH)?

[Tom Sutton]

I do not know but a possibility is ASH could be the anti smoking campaign, OSH could be occupational safety and health and they could indicate their approval?

[Guest Bif]

YSH is a smoke detector and ASH is a gas detector. 

[green-foam]

Thanks for that Bif, it will do for reference, but no one has asked before  and I should guess carlos has since found the answer, as he asked back in April 2020 ?