Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Festo
The Festo part number 537687 is a round optoelectronic industrial component utilizing diffuse sensing with background suppression and red light to measure position within a 10 mm to 120 mm working range. Operating on 10 V to 36 V DC with a 25 mA idle current, this device features a PNP switching output with light switching element function, a maximum switching frequency of 500 Hz, a 200 mA max output current, and pulsed short-circuit protection. It conforms to standard EN 60947-5-2, carries RCM and c UL us - Listed (OL) certifications, and complies with EU and UKCA directives for EMC and RoHS across an ambient temperature range of -25 °C to 55 °C. Request a quote today by submitting the exact part number, required quantity, and your application specifications.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 537687. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.