KL4101X1-BA1 CHARM I/O Card Carrier for Hazardous Zones By wayne No Comments on KL4101X1-BA1 CHARM I/O Card Carrier for Hazardous Zones 3 Min Read Browse the KL4101X1-BA1 CHARM I/O Card Carrier. It delivers 24 VDC at 12 A input power for hazardous atmosphere applications. Certified for Zone 2.