Balluff GmbH BES517 Q1605NU-0.5 Proximity Sensor

Balluff BES517-Q1605NU-0.5 Proximity Sensor is a compact proximity switch from Balluff's BES517 family, designed for non-contact presence detection in automation tasks. It operates from 10 to 30 V DC and provides a sinking NPN output, enabling straightforward interfacing with common PLC inputs. The 0.5 m cable variant BES-517-Q1605NU-0.5 is specified with a 0.5-meter lead and has a reported weight of about 0.25 lb, making it suitable for wiring in cramped control panels or machine frames. This model is listed as discontinued by the manufacturer. As part of the BES517 family, it represents Balluff's approach to compact, discrete sensing in environments where non-contact operation and space efficiency are important.