DSO-TC4 3-in-1 Handheld Digital Oscilloscope Transistor Tester Signal Generator

About this deal

The FNIRSI DSO-TC4 is a compact, battery-powered test instrument aimed at electronics hobbyists, repair technicians, and R&D professionals. As an oscilloscope it offers 10 MHz bandwidth and a 48 MSa/s sampling rate, with a maximum input of 400 V. It features a 2.8-inch TFT colour screen and a built-in 1500 mAh rechargeable lithium battery providing around four hours of use. The DSO-TC4 also supports USB image sharing, letting you connect to a PC to manage oscilloscope data and carry out further analysis. The signal generator outputs 13 waveform types with adjustable frequency, amplitude, and duty cycle, while the component tester measures capacitors, resistors, inductors, and more with automated pin recognition. The transistor tester automatically identifies pins and parameters, and supports NEC IR decoding. Typical use cases include DIY learning, on-site commissioning, appliance repair, and power measurement, making it a practical all-in-one bench companion or field tool for anyone who would otherwise need to carry three separate instruments.