DM303 Automotive Oscilloscope Multimeter, 3-in-1 Handheld Scope with K/CAN Bus Reader, Injector Cranking Relay Test, 500KHz True RMS Diagnostic Tool

About this item

• 💞 3-in-1 Professional Automotive Diagnostic Tool. Combines a true RMS digital multimeter, a 500KHz digital oscilloscope, and a K/CAN bus signal reader in one handheld unit. This integrated design replaces three separate tools, saving professional mechanics over three hundred dollars in equipment costs. Diagnose no-start conditions, analyze sensor waveforms, or read live ECU data streams with a single portable device designed for the workshop, roadside, or home garage.
• 💞 Complete Vehicle Electrical Testing Suite. Beyond essential multimeter functions—AC and DC voltage up to 1000V DC and 700V AC, current up to 20A, resistance up to 1MΩ, frequency, diode, and continuity—the DM303 includes workshop-ready automotive tests. Cranking Test measures battery voltage drop during engine start and flags minimum values below the 9.6V industry threshold. Injector Pulse Simulation outputs drive signals adjustable from 500 to 6000rpm to verify fuel injector electrical function without component removal. Relay Test supplies controlled voltage to energize relays, lights, and solenoids for fast circuit checks.
• 💞 Advanced Oscilloscope and Signal Analysis. The built-in 500KHz digital oscilloscope captures real-time waveforms from camshaft, crankshaft, wheel speed, oxygen sensors, and ignition circuits. Variable sampling ensures accurate rendering of both fast pulses and slow sensor sweeps. Sine and square wave output with adjustable frequency and duty cycle enables ECU signal simulation—a feature usually found only in equipment costing three to five times more. K-line and CAN bus data reading at 500000 BPS displays message IDs and live data frames, helping pinpoint intermittent communication faults quickly.
• 💞 Proven Safety and User-First Engineering. Intelligent input impedance switches between 2 to 3MΩ below 160V and 10MΩ above 160V for accurate measurements across all ranges. Self-recovery fuses on the 10A and mA/μA terminals automatically protect against overload damage—no fuse replacement needed. The 2.8 inch color LCD with adjustable brightness delivers clear waveform views and numeric readouts even in dim garage bays. Powered by standard batteries for true grab-and-go portability.
• 💞 Complete Professional Kit with Three-Year Warranty. Includes main diagnostic unit, premium test leads, alligator clips, battery clip power line, K-line signal line, CAN positive and CAN negative signal lines, sine and square wave signal lines, jumper connectors, precision probe, and a rugged portable toolbox. Backed by a three-year manufacturer warranty with free parts replacement for non-human damage. Multilingual interface supports twelve languages. Responsive twenty-four-hour customer service is always available.

Overview

• Brand: QPKING
• Power Source: Battery Powered
• Style: Compact
• Color: Black
• Upper Temperature Rating: 40 Degrees Celsius