Mounting and set up safety switch CET3-AP (closed-circuit current principle) - YouTube
Application and use of the transponder-coded safety switch CET with guard locking - YouTube
Safety switch CET-AS | EUCHNER
Amazon.com: Euchner - CET3-AR-CRA-AH-50X-SG-C2333-114512 - CET 3-AR Series Locking Safety Switch, for Use with Mfr. No. 96327 : Industrial & Scientific