Function description: external control board, several kinds of control board for choice, high speed rotation up to 300000RPM. No Hall working mode gets such advantages as fast starting up, stable rotation and high efficiency (3%~5% higher than that of with Hall mode).

Protective functions: over current protection, overheat protection (for control board and motor); blocking protection, lacking phase protection, starting up protection etc. The controller can be used on normal vacuum cleaner, ventilator fans and cooling fans for equipments etc. We can adjust software according to different application to meet different application.