Handheld digital multimeter FNIRSI DST-201 3-in-1 with oscilloscope and SigGen

FNIRSI DST-201 is a new generation handheld digital multimeter that combines a True RMS multimeter, a handheld oscilloscope and a DDS signal generator (SigGen) in one mobile device. From the very beginning, it offers what classic meters lack: real-time waveform viewing, accurate measurements up to 19,999 digits, data logging, trend analysis and the ability to actively test circuits with a test signal. It is a comprehensive tool for diagnostics, servicing and field work.

A true handheld oscilloscope – complete signal control

The built-in oscilloscope with a bandwidth of 1 MHz and a sampling rate of 5 MSa/s allows you to observe signals with exceptional detail in this class. Trigger functions, level adjustment, auto/normal/single modes and infinite afterglow allow for immediate visibility of short disturbances, spikes, dips or jitter. This is a great advantage when diagnosing power supplies, audio, LIN buses, PWM or automotive electronics.

DDS generator for testing active circuits

The DST-201 is equipped with a DDS signal generator that supports 13 types of waveforms ( including sine, square, sawtooth, half-wave and step). The frequency range from 0 to 10 kHz, amplitude from 0.1 to 3.0 V and adjustable duty cycle from 0 to 100% allow you to test amplifiers, tune filters, simulate PWM and check circuit response without additional equipment. One tool - complete control over the signal.

True RMS multimeter – confidence in every measurement

As a full-fledged True RMS multimeter, the DST-201 measures AC/DC voltage and current, resistance, capacitance, frequency, temperature, diodes and circuit conductivity. It supports Phase/Wiring (quick phase wire detection), data hold, auto mode and intelligent burn-out protection. The result is accurate, stable and safe measurements – even with distorted waveforms.

Graph instead of guessing – see how the signal changes over time

The curve mode and data logging function allow you to store and display changes in values over time in a graph format. This makes it easy to detect instability, fluctuations, voltage drops or problems that only occur temporarily. This tool is designed for real-world problems, not laboratory ideals.

Capture a split second and analyze it at your leisure with the HOLD button

The waveform hold function allows you to “freeze” the waveform at a crucial moment, and data recording allows for later analysis or export. When an error lasts only a fraction of a second, the DST-201 freezes and displays it. Less stress, faster reasoning, more efficient repairs.

Clear display in all conditions

The bright 2.8" color TFT display offers two themes: day mode (black on white) and night mode, so the device remains readable in full sunlight, at night or in control cabinets. Large numbers, graphs, MIN/MAX and RMS indicators - everything is visible at a glance.

Power and mobility without compromise

The built-in 3000 mAh battery, which is charged via USB-C, ensures long operating time and convenience of use. The programmable auto-off (15/30/60 min) saves energy, and the durable silicone case protects the device from shocks and workshop conditions. This equipment is ready for field work.

Well-thought-out ergonomics and classic controls

The iconic function button combined with a modern interface allows for fast and intuitive operation. Automatic range selection, logical menus and physical buttons give you full control even with work gloves. It is a combination of classic design and modern electronics.

Included:

• FNIRSI DST-201
• Oscilloscope probe P6100
• Test cables
• Probe with crocodile clips
• USB cable
• User manual