The PCB-terminals in combination with the sandwich mount are specially for the application on printed circuit boards. This way the board can be fully equipped and tested before being mounted. The mounting is done by introducing the connector into the back wall, and placing the appliance housing into the groove on the inlet.
Thanks to the use of rolled contact pins, the variants with solder or PCB terminals are very inexpensive and therefore suitable for consumer goods. Nevertheless do they comply with all the security requirements and are approved by all the relevant international standards.