Feature:1. 2.5Msps high‑speed sampling, 1MHz analog bandwidth (limited to ACV file oscilloscope), 4000 codes, excellent performance.2. One‑key video, there are three waveform scanning modes: auto/normal/single.3. Data waveform retention function, can store 100 groups of data, 10 waveforms, can better record data.4. Multimeter functions include DC/AC voltage/current, resistance, capacitance, frequency, duty cycle, diode/continuity test.5. Automatic/manual range switching, real‑time data and stored data are displayed on the same screen, easy to operate, and the test data is displayed clearly.How to Use:1. Rotate the knob to select the measurement gear to turn on the power of the meter. Rotate the knob to select, and the OFF gear will turn off the power.2. If there is no button + knob operation within the set time, the meter will automatically sleep. To turn off the automatic sleep function, you can press and hold the "F1" key and then turn the knob, and it can be automatically set to continuous work after power on.Specification:Item Type: Oscilloscope MultimeterModel: ET828Material: ABSPower Supply: 3 x AA 1.5V Batteries (Batteries Not Included)Purpose: It is suitable for electronic measurement. Characteristic Display 240x320 Color Screen Observation Area Approx. 49.0