Hitecs HFP-30 Field Programmer is the latest in digital servo testing and programming. Packed with advanced features and a large, easy-to-read LCD screen, it efficiently programs all Hitec digital servos, including the HS-5XXX, HS-7XXX, brushless HSB-9XXX, and the latest D-Series. Operating on a wide voltage range of 4.8~8.4, the Hitec HFP-30 is your hobbys best, must-have accessory.