This is the Futaba BPS-1 Engine Backplate Sensor for Gyro Governor.

FEATURES: Designed for use with the Futaba GY701, CGY750 and GV-1 governors
          Ideal for use with the O.S. 55HZ-R and 91HZ-R heli engines
          Monitors and maintains RPM at a selected level
          Eliminates the need for fan mounted magnets and governor mounts

INCLUDES: BPS-1 Engine Backplate Sensor with Instruction Sheet

REQUIRES: Connecting to governor and backplate of engine

SPECS:    Length: 25.8" (655mm)
          Weight: 0.28oz (8g)

                                                                   jxs 08/23/11
                                                                         ir/jxs