Compatible with all previous iteration of RCxx remote controls: RC65, RC65X, RC65RX, RC66, RC66X
Compatible with following receivers: R16, R22, H21, H22, H23, H24,H25, HR21, HR22, HR23, HR24, HR34 and C31
Built-in RF feature allows the remote to control the receiver without having to point it at the receiver ( needs to be set up, not all receivers are compatible)