Tapeswitch Corp.’s HE Series noncontact safety interlock switches and multigate SCU-1 control unit monitoring system for machine guarding feature fully encapsulated solid state, single-point switching with built-in, dual color, LED status indication. The switches offer a CAT IV, SIL 3 PLe safety performance level. It has 2 N/O and 1 N/C bidirectional solid state outputs. The solid state outputs offer simple series connection. They offer a 7 mm switching distance and can approach on each other from most angles. They are used where monitoring for a guard is required and locking is not required, such as in several types of machinery packaging, paper, food and beverage, dairy, pharmaceutical, canning, mail, steel, motor, weighing, semiconductor, plastic, aluminum machinery, and metalworking industries.