Triplett 9200-A Miniature AC Clamp Meter is designed to measure AC current up to 300A. The Triplett 9200-A features low battery indication, data freeze, overload protection, 3 year limited warranty, and more. The Triplett 9200-A is a very feature packed unit great for security, home theater, electrical, HVAC, you name it. With AC measurements up to 300A and overload protection, the Triplet 9200-A is a truly capable unit.