The HPP-21 will allow the user to easily check any servo brand's servo performance by using servo test functions and set most of the programmable parameters of all HITEC digital servo Programming Features Digital Servos: - Factory Default Resets - Fail Safe ON-OFF - Dead Band Width Adjustments - Center and End Points - Direction of Rotation - Resolution Setup (G2 Servos Only) - Fail Safe Point Preset

More information (links):
* Hitec HPP-21 Instruction Manual (.pdf)
* Hitec HPP-21 Software Download (.zip)

The advantage is yours, when you choose to use Hitec digital servos programmed with the HFP-21 Hitec digital servo programmer and "all brands" servo tester. HPP-21 will fine-tune all your Hitec digital servos for optimum performance, and is the perfect answer to "matching" sets of servos for those big planes.

Works with all HS-7xxx G2, some HS-5xxx servos. See instruction manual for details. Mini USB cable not supplied (Available at most electronic stores).