Turck updated the housing on its CP40 sensors to include highly-visible LEDs and sealed programming buttons. The housing maintains its limit-switch style mounting with a two-piece design that features a sensing head that can be moved and oriented as needed. The sensor is ideal for wide areas of coverage, with a 60-degree cone angle and range of 2 meters.
The CK40 is a new design for this line that builds on the CP40 technology with a more compact housing and an M12 connector.
Turck CP40 and CK40 Ultrasonic Sensors w/ New Housing
Turck Technical Datasheets