GAP 4-1001, Bosmer 's generated that GAP (General Switcher Panel Device) series of KNX is a device with 4 output standard. The device is fed with 30 V DC KNX BUS. There is no need for an extra power supply. The main task is to make the switching device, the output can be set as desired in the project. GAP 4-1001, second shutter control or the fourth switching (switch) as designed according to different needs. Parameters and changes can be set via the ETS program.