FNIRSI 2C23T 3-in-1 Handheld Oscilloscope Multimeter DDS Generator

In this review of the FNIRSI 2C23T the bottom line is simple: it is a compact, multifunction test instrument aimed at technicians, hobbyists and students who need an affordable oscilloscope plus a true multimeter and a signal generator in one handheld unit. The single biggest reason to buy is the combination of a 10 MHz, 2-channel oscilloscope with a 50 MSa/s real-time sampling rate and a 10000-count multimeter in the same portable package, which makes basic bench and field troubleshooting much more convenient than carrying separate tools.

Key Features

• 2-Channel Oscilloscope: Provides dual-channel waveform viewing with a 10 MHz bandwidth for routine analog and digital signal checks.
• Sampling and Memory: A 50 MSa/s real-time sampling rate and 32 kb record depth let you capture short events and inspect detail at reasonable resolution.
• Built-in Multimeter: 10000-count multimeter mode measures AC/DC voltage to 750 V/999.9 V, current to 9.999 A, resistance, capacitance, diode and continuity for broad electrical tests.
• Signal Generator: Integrated DDS generator outputs up to 2 MHz with sine, square, triangle, pulse, noise and DC for quick stimulus and functional checks.
• Portable Design: FPGA+MCU+ADC hardware, a 2.8' HD LCD and a 3000 mAh battery give a self-contained handheld tool for field work and classroom use.
• Save and Compare: One-click image save and PC export plus reference waveform overlay make iterative debugging and documentation straightforward.

Who It's For

The FNIRSI 2C23T is best for electronics hobbyists, technicians on a budget and students who need a single portable unit to cover oscilloscope, multimeter and signal generator tasks without tying up bench equipment. Its 10 MHz bandwidth and moderate sampling rate are well suited to audio, power supply checks, basic microcontroller signals and general repair work.

Those who need high-end lab accuracy, very deep memory for long captures, or more than 10 MHz bandwidth should look at benchtop oscilloscopes. Likewise, if absolute precision in measurements or professional calibration is required, a dedicated lab multimeter or higher-spec oscilloscope is a better choice.

Pros & Cons

Pros

• Combines oscilloscope, 10000-count multimeter and a 2 MHz-capable signal generator into one portable unit for broad functionality.
• Good value for money with VGA-style 2.8' HD display, waveform save/export and reference overlay for comparisons.
• Battery-powered with 3000 mAh cell and built-in high-voltage protection makes it safer and convenient for field use.
• Automatic measurement functions and a range of vertical sensitivities from 200 mV/div to 10 V/div simplify routine tasks.

Cons

• Some users report mixed accuracy and occasional waveform fidelity issues, so it is best for general troubleshooting rather than precision laboratory measurement.
• Screen brightness and battery life receive mixed feedback, which may limit long outdoor or bright-environment use without AC power.

Specifications

Channels	2
Oscilloscope Bandwidth	10 MHz
Sampling Rate	50 MSa/s real-time
Record Depth	32 kb
Multimeter Counts	10000 counts
Signal Generator Max	2 MHz output, 1 Hz step
Battery	3000 mAh rechargeable

Our Verdict

The FNIRSI 2C23T is a versatile, cost-effective handheld test tool that blends a 10 MHz dual-channel oscilloscope, a 10000-count multimeter and a 2 MHz DDS generator into one device. It is an excellent value for hobbyists, students and field technicians who need portable multi-function capability, though those requiring top-tier accuracy or higher bandwidth should consider a dedicated bench instrument.

Frequently Asked Questions

Can this unit measure mains voltage?
Yes, the multimeter mode supports AC voltage up to 750 V and DC voltage to 999.9 V with built-in high-voltage protection for safer measurements.

What waveforms can the signal generator output?
The DDS generator can output sine, square, triangle, pulse (full and half), noise and DC waveforms up to 2 MHz with 1 Hz resolution.

Is it suitable for precision lab work?
It is designed for general troubleshooting and education; users needing laboratory-grade precision or higher bandwidth should choose a dedicated benchtop oscilloscope or calibrated multimeter.