Feature: 1. Adopt ARM Cortex‑M3 (STM32F103C8), and include a 2.4‑inch color TFT display screen. 2. Used for secondary development on the basis of this kit, for example, it can be changed to Millivoltmeter, data loggers. 3. Come with instructions, easy to install and operate, with Auto/Normal/Single trigger modes, easy to capture the moment waveform. 4. Available rising or falling edge trigger, observable previous waveform before trigger(negative delay), can freeze waveform display at any time(HOLD function). 5. With waveform parameter digital display, including frequency, period, pulse width, duty ratio, Mmaximum./MIN./AVG./Peak‑Peak/virtual values. 6. With TFT controller recognition and waveform storage function, will not lose the waveform after power off. 7. Short‑circuit and open‑circuit detection: can help the user find out the soldering error, the SMD has been soldered, more suitable for electronic beginner. Specification: Item Type: Digital Oscilloscope Material: Engineering plastic Purpose: DIY oscilloscope Maximum Real-time Sampling Rate: 1MSa/s Analog Bandwidth: 0-200KHz Sensitivity Range: 5mV / div-20mV / idv Maximum Input Voltage: 50Vpk (1x probe) Input Impedance: 1MΩ / 20pF Accuracy: 12 bits Record Length: 1024 points Coupling Mode: DC / AC / GND Time Base Range: 500s / Div-10us / Div Trigger Mode: Automatic, normal and single Trigger Position: Buffer center Power Supply Voltage: DC 9V (8-10V). Package List: 1 x Oscilloscope1 x Test Chuck1 x User Manual Note: Please note that the kit does not include a power supply, users need to prepare their own power supply, the power supply current should be able to provide more than 200mA. 9V is recommended