DS212 Mini Oscilloscope is a dual-channel digital storage oscilloscope with its own display and built-in battery. The built-in 8MB U disk can be connected to the computer through the Micro USB interface to exchange data. The shell is made of aluminum alloy, which is sturdy and durable. It is only half size of a mobile phone and is easy to carry. It also comes with a 320x240 resolution LCD display and a rechargeable battery, which is convenient for users to use in outdoor scenes. DS212 is operated by double encoders and buttons, which is easy and convenient to operate. Built-in signal source, it has an independent calculation channel, which can be used for waveform calculation. The highest sampling rate is 10MHz, which can be used as a basic measurement tool for electronic engineers.