AC W High Speed Tester is a device used to check the integrity and correctness of wiring in an alternating current (AC) electrical system. This typically refers to a testing device capable of quickly and efficiently performing measurements or tests. These are designed to combine various functionalities, such as AC voltage testing, continuity testing, resistance measurement, and more. It can assess parameters like voltage, current, power factor, and harmonics, providing a detailed analysis of the electrical system. AC W High Speed Tester is commonly used in manufacturing or production environments.