FNIRSI-DSO-TC4 Multitester Oscilloscope, Function Generator, Component Test

The FNIRSI DSO-TC4 is the powerful next-generation upgrade to the popular DSO-TC3 - a compact, multifunctional handheld multitester combining a real 10MHz digital oscilloscope, function/arbitrary waveform generator, advanced component tester and LCR meter in one lightweight device. With 48MS/s sampling rate, 2.8-inch high-resolution TFT colour display and intuitive minimalist keyboard, the DSO-TC4 delivers professional-grade performance for hobbyists, students, engineers, technicians and field service pros.

Key Oscilloscope Upgrades:

• True 10MHz bandwidth (1 channel)
• 48MS/s real-time sampling rate
• 50ns-20s time base range
• 10mV-10V/div vertical sensitivity
• Auto/Single/Normal trigger modes + rising/falling edge
• One-key AUTO capture & save waveforms instantly
• Measures Vpp, Max, Min, Avg, RMS, Frequency, Cycle, Duty
• 1×/10× probe support (up to 800Vpp with 10:1 probe)

Powerful Built-in Signal Generator:

• 13 waveform types: sine, square, pulse, triangle, ramp, DC + more
• 1Hz-50kHz output frequency
• 0.1-3.0V adjustable amplitude
• 0-100% adjustable duty cycle

Advanced Component Tester & LCR Meter:

• Auto-identifies & measures transistors (NPN/PNP, MOSFET N/P, JFET), diodes, thyristors, capacitors, resistors, inductors & more
• Pinout detection & ESR measurement
• New anti-burn overvoltage protection - auto-discharges capacitors before testing to prevent accidental damage

Convenient & Modern Design:

• USB Type-C fast charging with built-in 1500mAh lithium battery ( 4 hours runtime)
• Ultra-compact & lightweight - 142 × 90 × 27.5mm / 186g
• PC connectivity via USB - save waveforms & screenshots easily
• Includes x1/x10 100MHz oscilloscope probe for safe high-voltage measurements

Perfect for electronics repair, prototyping, education, fieldwork, debugging circuits, testing components or quick waveform checks on your bench. The DSO-TC4 gives you four powerful instruments in one portable, affordable package - no more juggling multiple tools.

What's in the box
1 x FNIRSI-DSO-TC4 Multitester Oscilloscope
1 x X1X10 Oscilloscope Test Probe
1 x BNC-MCX Adapter
3 x Test Hooks
1 x Alligator Clip Cable
1 x USB Type-C Charger Cable
1 x Printed User Manual.