Automotive Multimeter Engine Analyzer 770J RPM Dwell AC/DC Voltage Current

PR-770J — Automotive Multimeter RPM & Dwell TesterThe 770J is a professional 3 1/2-digit automotive diagnostic multimeter designed for vehicle electrical system testing and engine troubleshooting. Whether you're a mechanic, DIY enthusiast, or automotive student, this versatile tool delivers accurate measurements for a wide range of applications.What You Can MeasureAC/DC Voltage: 200mV to 1000V DC / 750V AC, 10MΩ input impedance.DC Current: Up to 20A with 20A/500V fast-blow fuse protection.Resistance: 200Ω to 200MΩ, with audible continuity and diode check.Temperature: K-type thermocouple for -20°C to 250°C measurement.RPM Tachometer: 60-12000 RPM for 3/4/5/6/8 cylinder engines (4-stroke and DIS).Dwell Angle: 0-90° (3/4/5/6/8 cylinder ignition systems).Key FeaturesAll-in-One Automotive Tester — Combines AC/DC voltage, DC current, resistance, diode, continuity, temperature, RPM tachometer, and dwell angle testing in a single handheld device.RPM & Dwell Diagnostics — Built-in RPM tachometer with inductive pickup for 3/4/5/6/8 cylinder engines. Dwell angle measurement for ignition system analysis and carburetor adjustment.Non-Contact Voltage Detection — Built-in NCV sensor (90V-1000V AC) with red/green LED and audible buzzer. Safely detect live AC voltage withou contact.User-Friendly Design — Large 1999-count backlit LCD with CDS auto-brightness sensor. Data Hold freezes readings. Auto power-off after 20 minutes to save battery. Protective casing for workshop durability.CAT III 1000V Safety — Designed to IEC-1010 CAT III 1000V safety standards. Double insulation. Overload protection on all ranges. Includes test leads, K-type thermocouple, and manual.ApplicationsAutomotive diagnostics, engine tuning, ignition system testing, electrical troubleshooting, DIY projects, educational laboratories.What's in the Box770J multimeter unit, test leads, K-type thermocouple, protective casing, 9V battery, user manual.

• Automotive Multimeter：Professional 3-1/2-digit automotive multimeter with 1999-count LCD. Measures AC/DC voltage (up to 1000V/750V), DC current (20A), resistance (200Ω-200MΩ), temperature, diode, and continuity. Perfect for vehicle electrical system diagnostics.
• RPM & Dwell Tester：Built-in RPM tachometer with inductive pickup for 3/4/5/6/8 cylinder engines. Measures engine speed up to 12000 RPM. Dwell angle testing for 3/4/5/6/8 cylinder ignition systems. Essential for engine tuning and troubleshooting.（Inductive Clamp for RPM measurement is NOT included）
• AC/DC Current Tester & NCV：Measures DC current up to 20A with fast-blow fuse protection (20A/500V). Built-in NCV non-contact voltage detection (90V-1000V AC) with red/green LED and audible alarm. Safely checks live wires without contact.
• Data Hold & Backlit Display：Press HOLD to freeze readings on the large backlit LCD. CDS sensor automatically adjusts backlight based on ambient light. Auto power-off after 20 minutes conserves battery. Ideal for dimly lit workshops.
• Automotive Diagnostic Tool：Ideal for automotive repair, engine tune-ups, ignition system diagnostics, and DIY electrical projects. Includes test leads, K-type thermocouple, protective casing, and 9V battery. Compact design with CAT III 1000V safety rating for reliable daily use.