The HT9019 professional AC current clamp meter measures up to 1000 A RMS and AC/DC voltage up to 1000 V in accordance with CAT IV 600 V safety standards per IEC/EN61010-1. The clamp features a large display with 6000 measurement points, backlight, and an analog histogram for easy reading in low-light conditions. It also includes an auto-off function to conserve battery life.