The next-generation tool for motor testing and tuning, Hobbywing Tunalyzer has an internal voltage regulator to allow repeated tests at the same voltage as the battery pack discharges. The Tunalyzer allows you to run auto-testing modes to provide quick and easy tests. This allows testing to be done on several motors for direct comparisons. Ultra crisp and clear full-color touch display allow for an extremely quick and easy-to-learn interface. Easy to read and use. Sensorless and Sensor motors can be tested. Virtually any pole count or style of a brushless motor can be tested with the Tunalyzer. Built-in reverse polarity protection circuit. Equipment will not be damaged by an incorrect battery connection.