The digital measuring and control adapter EXDUL-142 offers 24 programmable, digital input / output channels with TTL level. The three input / output ports are in groups of eight channels each, the third port can also be programmed as inputs or outputs in two groups of four channels each. The compact and absolutely robust metal housing integrates the entire logic of the adapter as well as the 37-pin D-Sub socket, which is used to connect the peripherals. The PC connection is simple and uncomplicated, Plug & Play via a USB interface, which is also used for power supply.