FNIRSI 2C23T 2C53T Handheld Digital Oscilloscope Multimeter Signal Generator

Overview

The FNIRSI 2C23T and 2C53T are advanced 3-in-1 handheld instruments that combine a dual-channel digital oscilloscope, a true RMS multimeter, and a DDS signal generator in a single compact device. Built on an FPGA plus MCU/ARM and ADC architecture with integrated high-voltage protection up to ±400V peak, they are engineered for maintenance technicians, electronics developers, students, and home labs that need reliable testing on the go.

Each model delivers fast signal capture, a clear 2.8-inch 320x240 display, and a rechargeable 3000mAh lithium battery for up to 6 hours of standby use. Choose the model that matches your precision needs: the 2C23T offers 50MS/s sampling with 10MHz bandwidth and a 4-digit 10000-count multimeter, while the 2C53T upgrades to 250MS/s sampling, 50MHz bandwidth, and a 4.5-digit 19999-count true RMS multimeter for higher accuracy.

Key Features3-in-1 DesignOscilloscope, multimeter, and signal generator integrated in one portable unitDual ChannelTwo input channels with 1MΩ impedance and vertical sensitivity from 20mV to 10VHigh-Voltage ProtectionBuilt-in protection rated to ±400V maximum measured voltageSignal GeneratorDDS output with 1Hz step adjustment, customizable frequency, amplitude, and duty cycleTrigger ModesAuto, Normal, and Single with rising and falling edge triggeringDisplay2.8-inch 320x240 pixel screen with YT and Scroll display modesBattery3000mAh lithium battery with USB Type-C 5V/1A chargingDimensions167 x 89 x 35 mm and approximately 300 g for easy handheld useHighlights

• ✓One tool replaces three separate instruments, saving space and cost in your toolkit
• ✓True RMS measurements cover AC/DC voltage and current, resistance, capacitance, diode, and continuity
• ✓Save waveform screenshots and export waveform images for documentation and reporting
• ✓Live line detection and temperature measurement from -55 to 1300°C add field versatility
• ✓Compact, battery-powered form factor lets you test on the bench or in the field

Usage

Ideal for electronic repair, circuit debugging, automotive diagnostics, education, and DIY electrical work. The oscilloscope captures and analyzes waveforms, the multimeter handles everyday electrical measurements, and the signal generator injects test signals for troubleshooting.

In the Box

• •FNIRSI handheld oscilloscope multimeter signal generator (model per your selection)
• •Rechargeable lithium battery
• •USB Type-C charging cable