PSENcode Large Non-Contact Switch, Unique Coded The PSEN cs2.2p safety switch is fully coded and the coding is unique which means it will only switch with the supplied actuator. If the actuator/switch is lost or broken, you will need to buy a new set. Series connection - you can connect more than 10 safety switches in sequence to Cat 4 of EN954-1 Unique assignment of switch and its actuator. They are coded only to each other for their operational life 5 directions of actuation M12 connection, 8-pin Note When the safety gate is closed the switch provides 2 N/C semiconductor outputs. Caution EN60947-5-3 standard is only met if entire system consisting of safety switch (PSENcode), actuator (PSENcode) and a safety monitoring module (PNOZ X or PNOZmulti) is used Standards EN954-1 (Cat 4), EN60204-1, EN60947-5-3 Approvals BG, cUL, CCC Supplied with Actuator Approvals BG, cUL, CCC Caution EN60947-5-3 standard is only met if entire system consisting of safety switch (PSENcode), actuator (PSENcode) and a safety monitoring module (PNOZ X or PNOZmulti) is used