PSEN ix1 Interface for 4 PSEN 1 535120 Interface PSEN ix1 for connecting and evaluating several safety sensors n/o, n/o, dimensions 96 x 48 x 43.5 mm (H x W x D), connection type spring-loaded terminals. Perfectly matched to magnetic sensors PSENmag: multiple interfaces PDP67, screws, spacers, mounting brackets, reverse spacers and much more.