This system allows the installation of a series of 1/8 solenoid valves with different functions: 5/2 monostable 5/2 bistable and 5/3, through a printed circuit board inserted in an aluminum shell with a female connection SUB-D 25 pin; this avoids the wiring of each valve.
Thanks to a simple and intuitive coding system, it is possible to order the island with mounted and tested solenoid, or also to just order the island and mount the solenoid valves at a later date.