Specifications The Aria 40A BLHeli Brushless ESC is an Electronic Speed Controller for brushless weapon motors.  A very detailed video on ESCs and how they work can be seen on Youtube here: https://youtu.be/OZNxbxL7cdc Our Aria 40A BLHeli Brushless ESC can serve in a variety of areas, but it should generally be viewed as a replacement part or a standalone weapons controller. Type Brushless Firmware BLHeli_32 Support DSHOT 150/300/600/1200 Continuous 40A Max 45A peak 10s Size 34.5mm x 11mm x 5mm Input Voltage 3S-6S Lipo Weight 6.4g Weight 0.23oz Weight with bullet connectors 9.8g Weight with bullet connectors .35oz Current Limit Yes Current Sensor Yes Status LED Yes BEC No Adaptive Timing Yes Firmware upgradable Yes, via signal wire A great wiring diagram, thanks to Georgia Tech’s RoboJackets Wiki can be found here: Diagram Note that the Aria 40A BLHeli Brushless ESC would be used in this instance as the orange element in the wiring diagram:  as a controller to a brushless weapons motor.  All controllers are driven from the same battery, as you can see from the diagram.  This model doesn’t have a BEC (Battery Eliminator Circuit), which allows all elements to be run from a single battery.  Power to the receiver can be supplied by the motor ESCs or by a separate dedicated BEC circuit. NOTE: This speed controller is forward only, and can be used to control weapons but NOT brushless drive motors.