Feature: 1. MULTIPLE FUNCTIONS: This oscillograph has a real time sampling rate of 2.5MS/s, a bandwidth of 200kHz, complete triggering function (single, normal, automatic). 2. MEASURING SIGNAL: Whether it is for periodic analog signals or non periodic digital signals, it can be used freely, and can measure voltage signals up to ±400V. 3. WAVEFORM DISPLAY: Supports one key AUTO, can display the measuring waveform without complicated adjustment, with a 1KHz calibration square wave. 4. POWER SUPPLY: This handheld oscillograph is equipped with 1000mAh lithium battery and supports 5V 1A USB charging to ensure long endurance. 5. CLEAR DISPLAY: The digital oscillograph has a compact size with a 2.8in screen, which is clear and intuitive, greatly improving measurement efficiency. Specification: Item Type: Oscillograph Model: DSO152 Sampling Rate: 2.5MS/s Coupling Method: AC DC Bandwidth: 200K Display: 2.8in, PP1: 320 x 240 Vertical Sensitivity: 10mV/Div-20V/Div (in steps of 1-2-5) Time Base Range: 10uS/Div-50s/Div (in steps of 1-2-5) USB Charging: 5V 1A Voltage Range: x1: ±40V (Vpp: 80V), x10: ±400V (Vpp: 800V) Power Supply: 1000mAh Lithium Battery (built in battery) Calibration Square Wave: Frequency: 1K Duty Cycle: 50% Trigger Method: AUTO, Normal, Single. Package List: 1 x Oscillograph2 x User Manual1 x Hanging Rope1 x Crocodile Clip1 x Usb Cable1 x Probe Wire2 x Accessories