Hioki clamp on meters are best in class measuring devices incorporating Hioki's expertise in current sensing technology. The 3280-10 and 3280-20 are our most popular clamp on meters, featuring a thin and compact clamp core that lets you get into the tightest spots. Product Features: Measure the fundamental waveform component using the average rectified method Measure even harmonic waveform components using the true RMS method Drop proof design withstands drop from a height of 1 meter 3280-10 MEAN Value Clamp on Hi Tester Measure the fundamental waveform component using the average rectified method Wide range of max 1000 A Drop proof design withstands drop from a height of 1 meter One meter drop proof tested tough Temperature measurement Ohmmeter circuit tested to 250 V AC over voltage Clamp on measurement for busbars and thick conductor Independent opening double lever design Slim body allows easy clamping even for narrow conductors No metal exposure and ensuring enhanced safety Specifications: AC Current Ranges: 42.00/420.0/1000A AC AC Voltage Ranges: 4.200/42.00/420.0/600V AC AC Voltage: 50 to 500Hz AC Current: 50 or 60Hz Set Includes: Instruction manual x 1 9398 Carrying Case x 1 L9208 Test Leads x 1.