DSO138 2.4" TFT Digital Oscilloscope (1Msps) + Probe B1 0-200Khz

Performance index 
Maximum real-time sampling rate : 1Msps
Accuracy : 12Bit
Sampling buffer depth : 1024 bytes
Analog bandwidth : 0 - 200KHz
Vertical Sensitivity : 10mV / Div - 5V / Div ( 1-2-5 progressive manner )
Adjustable vertical displacement , and with instructions
Input impedance : 1MΩ
Maximum input voltage : 50Vpp (1: 1 probe ), 400Vpp (10: 1 probe )
Coupling modes include DC / AC / GND
The horizontal time base range : 10μs / Div - 50s / Div ( 1-2-5 progressive manner )
With automatic, regular and one-shot mode , easy to capture the moment waveform
Available rising or falling edge trigger
Adjustable trigger level position , and with instructions
Observable trigger waveform before ( negative delay )
Can freeze at any time waveform display (HOLD function )
Comes 1Hz /3.3V square wave test signal source