Key features

• •[All-in-One Electrical Diagnostic Powerhouse] Combines AVOmeter, test light, flashlight, short circuit indicator, relay tester, and more—handles voltage, current, resistance checks, and component activation in one tool, perfect for fast automotive electrical troubleshooting.
• •[Versatile Testing Capabilities] Autel PS100 performs voltage checks (battery, alternator, sensors), parasitic drain detection, and charging system analysis. Instantly identifies positive/negative/open circuits, bad grounds, and continuity in switches/relays/diodes.
• •[4 WORKING MODES—SIMPLE & INTUITIVE] 1. DC Voltage: reads DC voltage with a 0.1V resolution for precise measurements. 2. AC Voltage: quickly captures minimum/maximum voltage, duty cycle, and frequency. 3. Resistance: measures the resistance between the probe tip and auxiliary ground wire. 4. The unique Tone On/Off: especially handy in low-light areas—circuit voltage can be judged by the sound volume, eliminating the need for constant visual checks.
• •[User-Friendly & Practical Design] 4.96" compact size with a 160x128 dpi TFT color display for easy reading. Built-in flashlight for working in the dark and 20ft extendable cable for hard-to-reach areas; audio tone alerts allow "no-look" operation.
• •[Safe & Reliable] Circuit breaker protected to prevent overloads. Powers via vehicle battery (12V/24V) with included battery clamps and cigarette lighter adapter. Durable build handles 0–60°C (32–140°F) operating temps.
• •[Complete Package] Comes in a blow-molded case for easy storage. Backed by a 1-year limited wa-rranty—ideal for technicians and DIYers needing a robust, all-purpose electrical testing solution.