The HFP-30 is three tools in one. It is a servo programmer, servo tester/analyzer, and even a PWM signal reader. It will program all Hitec digital servos including classic HS-, D-series and Brushless (BLDC). It gives fine control over testing servos of all types... be they Hitec or any other brand. Lastly the device can read and display incoming PWM signals. This can be an invaluable diagnostic function when troubleshooting flight controllers, gyros or even finicky control receivers.