Fast Sampling Digital Oscilloscope: 250K Miniature Oscilloscope has a real-time sampling rate of 2.5 MS/s, a bandwidth of 250 KHz, a voltage range of X1: ±40V (Vpp: 80V), a calibrated square-wave frequency of 1kHz, and a duty cycle of 50% Advanced Triggering and Display: Complete triggering functions (single/regular/automatic) work well with both periodic analog signals and non-periodic digital signals, and this digital oscilloscope comes with a 2.8-inch high-definition LCD display with a resolution of 320*240 for easy viewing Simplified Measurement:Equipped with an efficient one-touch automatic measurement function that displays the measured waveform without tedious adjustments. Simply press the AUTO key to automatically recognize the waveform type, adjust the waveform amplitude and time.