CM3281 AC Clamp MeterHioki clamp meters are best in class measuring devices incorporating Hioki's expertise in current sensing technology. The CM3281 is an average rectified 2000A AC clamp meter that features a broad operating temperature range of 25 degrees Celsius to 65 degrees Celsius, thin and compact clamp core and optional flexible current sensor that you can attach to let you get into the tightest spots. CAT IV 300 V CAT III 600 V Key Features AC only, measure up