This is the GV-1 Governor from Futaba! The GV-1 Governor improves helicopter aerobatic performance and lessens engine wear. Features 3 different rpm settings, and can be turned on and off easily with a switch or throttle stick. The two-piece unit regulates engine speed and main rotor rpm by + or - 1% and features a separate program setting for gear ratio. It is a very compact main unit and weighs just 1.2 oz., and the sensor is only .14 oz. The Futaba GV-1 Governor works with any helicopter radio with 8 or more channels.
Weight:1.2oz (33g) (Main unit) and .14oz (4g) (sensor)