This Cycle Analyst was specifically designed by Ebikes.ca and FFR for sensorless RC motor-driven applications. This allows builders to use the extremely power-dense and lightweight RC drive systems, but with the refinement of having fully-programmable current limiting, speed limiting, and throttle response. Also, this unit has a pedal-first speed detect feature that will prevent the motor from starting up until a set speed. The Deltec High Current shunt is a highly recommended option, unless you're using your own shunt.