ERNI Pre-alignment modules are designed for secure plugging of  ERmet 2.0 mm HM and ERmet ZD plug-in boards. They enable an exact plugging of many electrical contacts without damage. At the same time they meet the requirements with as much clearance as possible between the guide rails of an assembly carrier and the plug-in boards. Stresses on the PCBs can be avoided. Additional functions such as electrical contacts and coding options expand the area of use.