COOL-I-O® is a compact system for designing and measuring power systems. It is ideal for students and engineers on the go—field apps engineers, teaching labs, and working design engineers. What's inside COOL-I-O®: 2-Channel 10 Hz-1 MHz Frequency Response Analyzer 2-Channel 50 MHz Oscilloscope Ridley 10 Hz-1 MHz Injector COOL-I-O® Lifetime License RidleyWorks® 1-year License Also included with your order: COOL-I-O® Manual RidleyWorks® Manual PicoScope® Manual PicoScope® oscilloscope probes 2 USB cables (1 USB-A/1 USB-C)