The radio control manages 4 relays or electrovalves as well as the 4 - way oil pump relay of the hydraulic gangplank central unit. The electrovalves connected to the radio control can be operated by either a 868Mhz 4 - channel radio control or a wired remote control (both included in the KIT). The watertight plastic material central unit is pre - cabled for connection to the hydraulic central unit. Fitted with microprocessor control, it has LED lights that show the activation of controls and radio functions. The product comes with standard caps for the electrovalves.