DM40 Series 3-in-1 Digital Multimeter, 59999 Counts True RMS Oscilloscope Signal Generator, Handheld High Precision Touch Screen Tester for Electronics /Auto /DIY(DM40B)

Features

• 3-in-1 All-in-One StationTired of carrying a bulky multimeter, a separate oscilloscope, and an extra signal generator to your workbench? The ALIENTEK DM40 is your single-device solution. It combines a high-performance 4-digit true-RMS multimeter, a 10MHz bandwidth digital oscilloscope, and a programmable signal generator all in one compact handheld device. Now you can measure voltage, visualize circuit waveforms, and generate test signals seamlessly without swapping tools or cluttering your desk. This 3-in-1 design saves you valuable bench space and moneywhy buy three separate instruments when one DM40 does it all?
• Professional-Grade Precision MeasurementDont settle for guesswork in your diagnostics. The DM40 delivers true 4-digit accuracy with a maximum 60,000 counts and a premium built-in 5ppm reference. It features True RMS (TRMS) measurement for precise AC/AC+DC readings, even with distorted waveforms. For critical automotive electronics, embedded development, and sensitive circuit analysis, you get reliable data you can trust. Users report DC measurements are extremely accurate compared to professional-grade gear, often requiring no field calibration. Whether you're testing power supplies, battery voltages, or sensor outputs, the DM40 gives you lab-quality results in a field-ready package.
• Built-in Scope for Signal VisualizationTroubleshooting intermittent glitches or noisy power rails? The DM40s built-in oscilloscope (50MSa/s, 10MHz bandwidth, 10-bit ADC, 64Kpts memory) lets you visualize and capture signal anomalies that a standard multimeter misses. Observe waveform rise times, ringing, and noise in real time. Use FFT to pinpoint harmonic issues in power supplies, logic signals, or sensor outputs. This visual insight helps you find root causes much faster than chasing fluctuating numbers on a basic meter.
• Built-in Signal Generator - Ready to UseTesting a circuits response? Generate sine, square, triangle, or sawtooth waveforms on the flyup to 10MHz for certain wave types, and up to 3.0Vpp output. Inject a signal into an audio amplifier, a filter network, or a sensor conditioning circuit, and instantly see the result on the DM40s own oscilloscope. This closed-loop capability is perfect for educational labs, hobbyist prototyping, and professional validation. No extra function generator needed, no second device to powerjust one tool to stimulate and measure, speeding up your design and debugging cycles dramatically.
• Pocket Lab with Smart Touch OperationLarge benchtop gear is powerful but impractical for field service. The DM40 puts a full-featured electronics lab into a lightweight (260g), pocket-friendly size (1428328mm). Its 3.5-inch IPS capacitive touchscreen makes navigation fast and intuitive. The innovative 3-jack design and One-Key AUTO range eliminate guesswork and connection errors. With 10+ hours battery life and USB-C charging, you can work all day in lab or field. Includes silicone sleeve, kickstand, CE/FCC certifications, and PC connectivity for data logging and firmware updates.