The DIN RAIL 4 Input / 4 Output Module IO44B02KNX is an EIB/KNX DIN rail mounting device useful to interface commands (e.g. push buttons) or loads (e.g. lamps) for any kind of applications. The device is equipped with 4 binary inputs (potential free) and 4 binary relay outputs. Inputs can be connected to conventional switching devices, e.g. push buttons, switches, floating contacts, for switching functions with pulse edge evaluation (e.g. rising or falling edge, toggle, etc…). Inputs can be configured with ETS SW, as output channels to drive LED in synoptic monitoring panels. Inputs can be used to for on/off commands, dimming, shutter control, scene recall and control. Outputs include switching function, scene recall, control logic function; timing function and a delay on activation or deactivation can be enabled. Outoputs can act as interlocked channels; this function can be used to drive fan coils with 2-pipe / 3 speed or 4-pipe / 2 speed. Device is intended to be installed on DIN rail.