Gap 4-1002 belongs to the Gap (General switchboard device) series produced by Bosmer ,it is a manuel device that is compatible with the KNX standard and has 4 outputs. The device is powered by the KNX BUS 30 V DC. It does not need extra power. The main task of the device is to make switching also outputs can be adjusted in the project as desired. The GAP device is designed according to different requirements such as 2 shutter controls or 4 switching. Parameters and modifications set via the ETS program.