Switches and push-button switches are clearly marked and safe for connectivity thanks to the scheme which is located on the side of the switch. Switches have simple screw connectors that allow safe and fast installation. Switches have inlets for easier implementation of conductors. The screws are secured from falling out. Installing the module switch into the mounting frame is simply done by hand pressing from the front side. Disassembly is also done from the front side without removing the mounting frame from the mounting box. It is only neded to remove module by screwdriver.