Function introduction: 2 channel input, synchronous display. Automatic measurement of amplitude, 4 measurement modes optional Input capture (trigger) function. Any channel can be set as a capture (trigger) source. Can set rising or falling edge capture (trigger) signal Capture (trigger) signal level adjustable. Data can be saved to the computer, automatically transferred to the saved data when the software is started. Data can be backed up, and later at any time to view the backup data waveform. Can display two channels of differential signal Lock signal to expand and compress waveforms up to 90 hours Suitable for monitoring the operation of electrical equipment for a long time and archiving. Suitable for collecting and archiving data such as temperature, humidity and light for a long time Technical Parameters Interface type: Micro-USB 2.0 Signal input interface type: BNC interface, connected with the oscilloscope probe line Maximum sampling rate: 1MHz ( 2 x 1MHz ) Operating voltage: 5 V Micro-USB interface power supply Consumption current: Less than 2 A Measurable frequency range: 0Hz-----250 kHz Amplitude adjustment range(/): 2 mV; 5mV; 10mV; 20mV; 25mV; 40mV; 50mV; 80mV; 0.1V; 0.2V; 0.5V; 1V; 2V; 5V; 10V Input impedance: 1 M/20pF Maximum measurement voltage: 80 V, Time domain range: 10 uS/-----10800 S/ Data recording and storage depth: 8388608 x 5 Maximum record and save data time: 90 hours Host size: 115mm x 70mm x 29mm Connection Connect the oscilloscope to the computer using the USB cable. material: plastic Color: as shown Package Contents: 1 x Fosc21C1 oscilloscope 2 x BNC connector 1 x USB data cable 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.