Features:  Portable Oscilloscope: Compared with traditional oscilloscopes,this oscilloscope with smaller size and more suitable for carrying around.  One Button Auto Adjust: One button AUTO setting all parameters and quick waveform measurement. Long press AUTO button to quick calibration baseline.  3 Trigger Modes: The singles trigger mode for tests unexpected non-periodic signals, the automatic trigger modes for test period analogs signals and normal trigger is for tests digital logic signals.  PWM Square Waves Output: This oscilloscope with the PWM square waves output function, 0-80kHz frequency ranges and 0-100% duty cycle.  Wide Applications: This oscilloscope is suitable for car repairing, DIY, home appliance maintenance, experiment teaching, etc.    Specifications:  Material: PCB  Type:(optional)  Type1: without P6100, without battery  Type2: without P6100, with battery  Type3: with P6100, without battery  Type4: with P6100, with battery  Battery: 1 * lithium battery, 1250mAh (only type2&4 included)  Sampling rate: 2.5MS/s  bandwidth: 200KHz  Voltage ranges:  X1: ±40V(Vpp:80V)  X10: ±400V(Vpp:800V) (only type3&4)  Trigger modes: Single, Automatic, Normal  Coupled mode: AC/Direct current  PWM output: 3.3V  Frequency: 0-80kHz  Duty cycle: 0-100%  Package size: 65 * 60 * 18mm / 2.6 * 2.4 * 0.8in  Package weight:  Type1&3: 162g / 5.7ounce  Type2&4: 182g / 6.4ounce    Packing list: (Optional)  Type1&2:  1 * Oscilloscope  or  Type3&4:  1 * Oscilloscope  1 * P6100