UL 1524-1999 UL Standard for Safety Carbon Monoxide Gas Detectors for Marine Use (Second Edition; Reprint with Revisions Through and Including December 15@ 2000)
1999UL 1524-1999 UL Standard for Safety Carbon Monoxide Gas Detectors for Marine Use (Second Edition; Reprint with Revisions Through and Including December 15@ 2000)
1989UL 1524-1989 Carbon-monoxide gas detectors for marine use