Auto Meter BVA-200s Battery & Electrical System Micro-Processor Tester, Hand-Held Unit, 120 Amp 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