This is an add on for the 40x160LSM module. When using this module for the Z-axis of a CNC machine, it is possible to expand it with the Junction Box Assembly. This assembly is screw onto the bearingplate of the LSM module, and allows easy mounting of the cable chains and cables. We use PIT connectors from Phoenix Contact to make the connections. It allows easy connecting and disconnecting of the cables and cable chain. Which is great when doing maintenance or when moving the machine to a new location, it can save a lot of time.