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The HANMATEK DOS1104 is the best-value 110 MHz 4-channel bench oscilloscope of 2025 at only €289 — but like 99% of bench scopes, its channels are NOT isolated (all grounds are tied together). This article explains exactly when that’s dangerous, the 5 most common “blown scope” accidents, and the safest, cheapest way to do floating/offline measurements in 2025: pair the DOS1104 with a €69 differential probe. Real tests, comparison tables, and Black Friday bundle (free SF3 stud finder) included.

Discover the best portable oscilloscopes of 2025. HANMATEK leads with ultra-light (<700 g), bright IPS screens, 8–10 h battery life, and pro features (100 MHz, 1 GSa/s, DMM, signal generator, decoding) at 30–50% lower prices. Top picks: HO102/HO102S, DOS1104, HO52.

This article reviews the Hanmatek HO102, a versatile 100MHz, 2-channel handheld oscilloscope. It highlights key features like its 250MSa/s sampling rate, 12,000-point record length, 3.5-inch TFT display, and auto-calibration. The review details its advanced oscilloscope capabilities, user-friendly interface, and suitability for various electronic testing and debugging tasks, positioning it as a valuable tool for professionals and enthusiasts.

Understanding the difference between a multimeter and an oscilloscope helps you pick the right tool for the job. A multimeter is best for measuring steady values like voltage, current, and resistance with high accuracy—great for quick checks, repairs, or learning basics. An oscilloscope shows how signals change over time, letting you see waveforms, spikes, and noise—perfect for labs, engineers, and troubleshooting complex circuits.

Choosing between a voltmeter and an oscilloscope can be tricky, but they’re built for different jobs. A voltmeter is perfect for quick voltage checks, while an oscilloscope lets you see signals in real time, capture fast glitches, and troubleshoot complex circuits with ease. In this post, we break down three big advantages of using an oscilloscope, explain when to pick each tool, and show why waveform visualization makes all the difference.

The Hanmatek DOS1102 is a cost-effective digital oscilloscope with 110 MHz bandwidth, 1 GSa/s sampling, and a 7-inch display. With dual channels, advanced triggers, FFT/math functions, and USB support, it’s ideal for engineers, educators, and electronics enthusiasts. Reliable and user-friendly.