TB Concepts commission Bus Solutions to develop a module to switch several outputs and monitor input buttons. This Timer had to work in harsh electrical noise environments and be programmable. The component had to be plug in for ease of fitting and service.
Our solution was to design a low power cmos gated PCB with relay output and opto isolated control inputs.
Three settable timers with sequence control. This could be powered by a wide DC input voltage with power and output indication. The whole unit was fitted in an eleven pin relay type box for ease on connection.