All safety switches of the ZCode series operate in a non-contact manner via an encoded magnet system with a large switching distance and high tolerance against offset to the safety door. These can be actuated only with the actuator included in the scope of supply. The switching status is indicated by a LED. The safety relays are completely dust- and waterproof (IP 69K). The difference lies in different housing variants. For example, type ZCode-TCE has a stainless steel housing for high temperature requirements or for high chemical resistance to environmental influences.