Fangrui Product Details 1. Indicator Light: Usually, When The Indicator Light Is On, It Indicates That The Sampling Is Running, 2. There Are Three Triggering Modes: Automatic Mode, Normal Mode, And Single Mode 3. Trigger Slope: The Trigger Slope Determines Whether The Trigger Point Is On The Rising Edge Or Falling Edge Of The Signal 4. Trigger Level: For Repeated Signals, The Trigger Level Can Stabilize Their Display. For A Single Signal, The Trigger Stage Can Capture It 5. Save Settings: When Exiting The Settings Interface, All Parameters Of The Settings Interface And The Main Interface Will Be Saved In Eeprom Waveform Generator: Pwm (pwm Generator) And Sin (sine Wave Generator), Adjust Rp1 And Rp2 To Change The Amplitude Respectively Supply Voltage: Dc 5v(micro-usb) Voltage Range: 0-30v (lsb Needs To Be Adjusted) Level Sampling: 10khz 100us /div Sec/div:500ms,200ms,100ms,50ms,20ms, 10ms, 5ms, 2ms, 1ms, 500us, 200us, 100us Note: Installation Guide Not Included, Please Check As Much As Possible To Make Sure The Item Is What Yo