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.

Omron
The Omron E3FC-LN21 is an M18 cylindrical axial background suppression photoelectric sensor featuring a 100 mm fixed sensing distance and an M12 connector. Constructed with a stainless steel housing measuring 48 mm in length, this component operates on a 10-30 V power supply and provides an NPN output with selectable Dark-ON and Light-ON operation modes. It utilizes a polarity free red light source, delivers a 0.5 ms response time, and maintains IP67 and IP69K degrees of protection. Submit the exact part number, quantity, and application requirements for an RFQ quote.
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 Omron 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 Omron E3FC-LN21. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.