1. Indicator light: usually the indicator light indicates that the 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 trigger point is on the rising edge of the signal or falling. 4. Trigger level: For repeated signals, the trigger level can stabilize the display. For single signal, the trigger level can be captured 5. Save Settings: When you exit the setup interface, all the parameters of the setup interface and the main interface will be saved in EEPROM. Product Specifications: Supply Voltage: DC 5V (micro USB) Voltage Range: 0-30V (requires LSB adjustment) Sampling Rate: 10kHz @ 100μs/div Sec/div: 500ms, 200ms, 100ms, 50ms, 20ms, 10ms, 5ms, 2ms, 1ms, 500μs, 200μs, 100μs Color: As Shown Material: Plastic+Metal Package Contents: 1* 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.