Light low-cost 4 modules enclosure. With the optional terminal covers you can have a simple and low cost two pcs enclosure or you can use the optional covers to enable you the flexibility to build your own DIN-rail enclosures. The possibility of mixing covers with different openings for connectors gives not only very wide options of connections, but also a very good price. Due to designed covers it is possible to add different and individual features to the design. Interconnections in form of pin headers and distance pcs/spacers from board level to board level are available. Options: Printed numbers and symbols on the cover and colour coded covers. Series M4 is, if requested, available with customer specified holes in front. Prototype PCB, customized label and packing are available.