400A AC/DC AUTO-RANGING DIGITAL CLAMP METER The CL380 is an automatically ranging true-root mean square (TRMS) digital clamp meter that measures AC/DC current via the clamp, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, tests diodes via test-leads, and temperature via a thermocouple probe. It features a high-visibility, reverse contrast LCD display that optimizes viewability both in dark or bright ambient lighting.