The WSEDU09 with Educational PC Oscilloscope, manufactured by Velleman, is a USB powered educational oscilloscope. It has a 5VDC power input, a maximum signal range of 3mV, a voltage range of 0.1 to 5V/div, and a maximum input impedance of 100kO. This oscilloscope is designed with educational users in mind, providing a user-friendly interface and comprehensive graphical representation of signal waveforms. Additionally, it supports multiple operating systems, including Windows 7 or later, and Mac OS 10.7 or later. With the included software, users can digitize and analyze up to 256 samples per second. The interface also supports USB-powered operation, allowing for use without battery power.