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 537823 is an optoelectronic distance sensor featuring a block design and a red laser light source with a 2x4 mm maximum spot diameter. Operating within an 80 to 300 mm working range and a 0 to 45 °C ambient temperature, this component delivers a 0.3 mm travel resolution, a 4 - 20 mA analog output, and a PNP switch output with an antivalent switching element function operating at up to 1,000 Hz. Constructed with copper-free and PTFE-free materials, it carries c UL us - Listed (OL) and RCM Mark authorizations alongside a CE symbol according to the EU-EMV guideline. Submit the exact part number, quantity, and application requirements to request a formal quotation.
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 537823. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.