Hello timo I have also ordered and installed the product. I am very satisfied. No 1 receiver and of course the transmitter. But you could connect up to three with the transmitter. For example, if you have 3 cars but only want one control unit.

According to the product reference: "This CR3P radio comes with a splash-proof and very small (35 x 21 x 12 mm) R3WP receiver ideal for small radio compartments."

One receiver, 3 channels.