Digital Circuit Tester w/ 23mm inductive pick-up clamp which is designed to easily enclose small wires while being large enough to measure most large wires.. Fast one-touch freeze button for capturing vital information. Features a" Hold" button that freezes the current test parameter and is sophisticated enough to perform a complete charging system analysis.. Works on AC and DC circuits. Low resolution DC amp range for easy detection of parasitic drain. Small convenient size that includes protective carrying case