1. Indicator light: Usually the indicator light is on to indicate that sampling is running 2. There are three trigger modes: automatic mode, normal mode, and single mode 3. Trigger slope: The trigger slope determines whether the is on the rising or falling edge of the signal 4. Trigger level: For repetitive signals, the trigger level can display stably. For single-s signals, the trigger level can capture 5. Save settings: When exiting the setting interface, all parameters of the setting interface and the main interface be saved in the EEPROM 6. Waveform generator: PWM (PWM generator) and SIN (sine wave generator), adjust RP1 and RP2 to change the amplitude respectively Product parameters: Power supply voltage: DC 5V (Micro-usb) Voltage range: 0-30V (LSB needs to be adjusted) Level sampling: 10kHz@100us/ Sec/: 500ms, 200ms, 100ms, 50ms, 20ms, 10ms, 5ms, 2ms, 1ms, 500us, 200us, 100us Circuit board size: 57x35mm Finished product size: 57x35x30mm Colour:As Shown Material:Metal + Plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Digital DIY Oscilloscope Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.