US SHIP Hobbymate V2.0 FBL 3-Axis Gyro 3 axis Flybarless Rc Helicopter Gyro MEMS Hobbymate V2.0 FBL 3-Axis Gyro 3 axis Flybarless Rc Helicopter Gyro MEMS Aluminum Case, light weight, for 250-700 Rc Helicopters, 1.5mm pin space The sensory system is based on the newest MEMS technology. With an optional adapter cable, HB800-FBL can also be utilized solely as a tail gyro. Moreover HB800-FBL integrated swashplate mixer enables the use of simple remote control systems which do not have their own swashplate mixing (NO-MIX). HB800-FBL is able to process many types of sum signals (PPM / S-BUS / Spektrum). With the optional Spektrum Satellite Adapter, installation in indoor model helicopters is also possible without a great number of wires