The AEMC 6550 is the most advanced and versatile electrical safety tester on the market. It combines the functionality of multiple testers into one compact and portable device, making it the ideal tool for electrical contractors, inspectors, and maintenance personnel. The 6550 features a large, backlit LCD display that makes it easy to read test results, even in low-light conditions. It also has a built-in memory that can store up to 100 test results, which can be downloaded to a PC for further analysis.