Mini Digital Oscilloscope 2.5MHz Sampling Rate 200KHz Bandwidth Support AUTO 80KHz PWM 17 Waveforms for Electronic Repair DIY    Features:  1. Use of high-quality materials, durable  2.2.5MHz sample rate, actual bandwidth 200KHz, analog bandwidth 500KHz (sine wave)  3. With a full range of trigger functions (single, normal, automatic), both for periodic analog signals and non-periodic digital signals can be used freely  4. Up to ±400V voltage signal can be measured  5. Equipped with efficient one-touch AUTO, the measured waveform can be displayed without tedious adjustment  6. With a key to save the waveform function    Specifications:  Sampling rate: 2.5MHz  Analog bandwidth: 500KHz (sine wave)  Actual bandwidth: 200KHz  Measurement voltage: X1/± 40V X10/± 400V  Input impedance: 1MΩ  Storage depth: 1Kb  Parameter display: 12 kinds  PWM output: Frequency 1k& 65374;80KHz Duty cycle 0& 65374;100% Output voltage 3.3V  Function waveform: 17 kinds of waveforms  Output: frequency 1 ~ 1KHz Voltage range Vpp 0 ~ 3.3V (non-adjustable)  Display: 2. 4 inch TFT, 320*240 resolution  Charging voltage: 5V  Battery capacity: 600mA / h 3.7V  Uplink: not supported yet  Firmware upgrade: support  Size: width 50mm length 100mm (excluding BNC head)    Caution:  1. When measuring voltages over 40V, be sure to dial the probe gear to X10  2. When measuring high voltage (more than 36V AC voltage), do not touch the metal part of the instrument, especially the BNC connector location  3. Do not exceed the charging voltage of 6.8V to avoid burning the charging chip  4. When not firmware upgrade, try to toggle the lower left corner of the toggle switch, toggle to Nomal    Product Instructions:  1.2uS, 5uS can not be used to measure waveforms other than sine waves.  2. Save waveform can only save the current display part.  3. Some of the measured signals cannot be captured correctly with AUTO and need to be adjusted manually.  4. Firmware upgrade: upgrade the display part, press OK tightly to turn on the power, upgrade the bottom part, press SAVE tightly to turn on the power.    Package Included:  Mini oscilloscope * 1  Alligator clip test * 1  High voltage probe * 1 (high version has)