Model: Ring Capacitive Proximity Sensor | CI16, CI17, CI21, CI22, CI25 Pre-wired and Connector | CI16-20NO-ZBA-3A-P, CI16-20NC-ZBA-3A-P, CI16-20PO-ZBA-3A-P, CI16-20PC-ZBA-3A-P, CI16-20PS-ZBA-4A-P, CI16-20NS-ZBA-4A-P, CI16-20NO-YBA-TA-P, CI16-20NC-YBA-TA-P, CI16-20PO-YBA-TA-P, CI16-20PC-YBA-TA-P, CI16-20PS-YBA-TA-P, CI16-20NS-YBA-TA-P, CI17-20NO-ZBA-3A-P, CI17-20NC-ZBA-3A-P, CI17-20PO-ZBA-3A-P, CI17-20PC-ZBA-3A-P, CI17-20PS-ZBA-4A-P, CI17-20NS-ZBA-4A-P, CI17-20NO-YBA-TA-P, CI17-20NC-YBA-TA-P, CI17-20PO-YBA-TA-P, CI17-20PC-YBA-TA-P, CI17-20PS-YBA-TA-P, CI17-20NS-YBA-TA-P, CI21-20NO-ZBA-3A-P, CI21-20NC-ZBA-3A-P, CI21-20PO-ZBA-3A-P, CI21-20PC-ZBA-3A-P, CI21-20PS-ZBA-4A-P, CI21-20NS-ZBA-4A-P, CI21-20NO-YBA-TA-P, CI21-20NC-YBA-TA-P, CI21-20PO-YBA-TA-P, CI21-20PC-YBA-TA-P, CI21-20PS-YBA-TA-P, CI21-20NS-YBA-TA-P, CI22-20NO-ZBA-3A-P, CI22-20NC-ZBA-3A-P, CI22-20PO-ZBA-3A-P, CI22-20PC-ZBA-3A-P, CI22-20PS-ZBA-4A-P, CI22-20NS-ZBA-4A-P, CI22-20NO-YBA-TA-P, CI22-20NC-YBA-TA-P, CI22-20PO-YBA-TA-P, CI22-20PC-YBA-TA-P, CI22-20PS-YBA-TA-P, CI22-20NS-YBA-TA-P, CI25-20NO-ZBA-3A-P, CI25-20NC-ZBA-3A-P, CI25-20PO-ZBA-3A-P, CI25-20PC-ZBA-3A-P, CI25-20PS-ZBA-4A-P, CI25-20NS-ZBA-4A-P, CI25-20NO-YBA-TA-P, CI25-20NC-YBA-TA-P, CI25-20PO-YBA-TA-P, CI25-20PC-YBA-TA-P, CI25-20PS-YBA-TA-P, CI25-20NS-YBA-TA-P