In direct adjacent control, neighboring units are connected to each other with group of wires connecting block distributors with the receivers in the adjacent unit.
In such a system final control distributors, adapted to remote control (without a lever) are placed in the same unit where receivers are arranged; instead, the respective actions are controlled by pilot control distributors fitted in the neighboring unit. Final control distributors with control (pilot) distributors are connected with a group of wires of small diameter – viz. from 2 to 6 mm.
An advantage of pilot control is a small force required for overdriving the lever of the pilot distributor if compared to a force necessary for overdriving the lever of a four way distributor.