Hobbywing Brushless RPM Sensor For High-Voltage ESC / V Bar HM-CGQ 1000rpm to 300000rpm RPM Sensor For Hobbywing High-Voltage ESC also used as an RPM sensor for Flybarless units RPM Sensor For Hobbywing High-Voltage ESC Function - It detects the voltage changes at the wires of brushless motor, and then outputs the RPM signal. This RPM sensor can work with some speed control systems for helicopters. And one of its typical applications is to work as the RPM sensor for V-Bar system made by Mikado. Specifications - Size: 23mm(L)*10mm(w)*2mm(H) |