Like TB-02, TB-04 is a self-contained automotive a/c system in which contains  condenser unit & evaporator unit. Users can easily to test a compressor within minutes without recovering the full a/c system. (Please see TB02 for more information)

TB-04 integrates computer and digital sensors & gauges into TB02. These help engineers to analyze the system data easier. Anakool software helps for recording  test results into database. Printing function is also good for customer reference.