WL-217 DUOYI DY222 BATTERY TESTER WITH TOUCH SCREEN is an instrument designed to test and evaluate the condition of various types of batteries. The DY222 model is specially manufactured for testing batteries commonly used in automotive, marine and industrial applications. This instrument is equipped with a touch screen interface, allowing users to perform testing operations more easily and quickly. It is used to measure the voltage level, capacity, resistance and other important parameters of the battery. WL-217 DUOYI DY222 Battery Tester has a durable construction and is suitable for long-term use. It can be used by both professional automotive technicians and amateur users.