FNIRSI DSO-TC3 3-in-1 Handheld Digital Oscilloscope, Signal Generator & Transistor Tester

Product Description:
The FNIRSI DSO-TC3 is a powerful and portable 3-in-1 multifunction tester that combines a 500kHz digital oscilloscope, function signal generator, and transistor/component tester into a compact handheld device. Designed with a clear 2.4-inch TFT color screen and a rechargeable lithium battery, this all-in-one instrument is perfect for electronics enthusiasts, students, hobbyists, and field technicians alike.

Whether you're analyzing signal waveforms, identifying unknown components, or generating test signals, the DSO-TC3 provides professional-grade capabilities in a palm-sized format.

Key Features:

• 3-in-1 Functionality: Digital Oscilloscope + Transistor Tester + Function Signal Generator

• Oscilloscope Specs:

  • Sampling rate: 10MS/s

  • Analog bandwidth: 500kHz

  • Voltage range: up to 400V

  • Trigger modes: Auto / Normal / Single

  • Waveform freeze and auto measurement supported

• Component Testing:

  • Supports NPN/PNP transistors, FETs, diodes, triacs, resistors, capacitors, inductors, and more

  • MOS Test mode for detailed transistor identification

  • Capacitance ESR testing and diode regulation up to 32V

• Signal Generator Modes:

  • Output waveforms: sine, square, triangle, pulse, ramp, DC

  • Frequency: 1Hz to 100kHz

  • Voltage: 0–3.3V adjustable output

• Additional Test Modes:

  • Circuit continuity check

  • Input voltage detection (0–40V)

  • Infrared remote decoding (NEC protocol)

  • DS18B20 and DHT11 sensor support for temperature and humidity

  • PWM output and diode testing

• Display & Build:

  • 2.4-inch TFT color screen with LED backlight

  • Foldable integrated stand for hands-free operation

  • USB Type-C charging

Technical Specifications:

Oscilloscope:

• Sample Rate: 10MSa/s

• Bandwidth: 500kHz

• Input Resistance: 1MΩ

• Coupling: AC/DC

• Voltage Range: up to 400V

• Vertical Sensitivity: 10mV – 10V

• Time Base Range: 1µs – 10s

• Trigger Type: Rising/Falling edge

• Trigger Modes: Auto / Normal / Single

Function Signal Generator:

• Waveforms: Sine, Square, Pulse, Triangle, Ramp, DC

• Frequency: 1Hz – 100kHz

• Output Voltage: 0–3.3V

Transistor Tester & Components:

• Triodes: β = 10–600

• Capacitor Range: 25pF – 100mF

• Resistor Range: 0.01Ω – 50MΩ

• Inductor Range: 10µH – 1000µH

• Voltage Testing: 0 – 40V

• Diode Forward Drop: <4.5V

• Regulated Diode: 0.01–32V

• Temperature: DS18B20 (0–85°C), DHT11 (0–60°C, RH 5–95%)

• Infrared Code Analysis: NEC protocol

Applications:

• DIY electronics and prototyping

• Circuit debugging and testing

• Signal waveform monitoring

• Component identification and sorting

• Educational and training labs

• Portable field diagnostics

Package Includes:

• 1 x FNIRSI DSO-TC3 Handheld Digital Oscilloscope

• 1 x Test Probe

• 1 x USB Type-C Charging Cable

• 1 x User Manual

Why Choose the FNIRSI DSO-TC3?
With a versatile set of features packed into a compact and user-friendly design, the DSO-TC3 simplifies electronics testing, waveform analysis, and signal generation. Whether you're learning, building, or troubleshooting, it gives you professional tools at your fingertips—anywhere, anytime.

Upgrade your electronics workspace with the FNIRSI DSO-TC3 and experience true all-in-one functionality today!

Specification

Digital Oscilloscope:

Function Signal Generator:

Transistor Tester & Tools:

NOTE: