Hitec's 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 hit EC digital servos, including the hs-5xxx, hs-7xxx, brushless hsb-9xxx, and the latest D-Series. Operating on a wide voltage Range of 4.88.4, the Hit EC hfp-30 is your hobby's best, must-have accessory.