{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3S-CT66-L","brand":"Omron","brandSlug":"omron","productSlug":"E3S-CT66-L","canonicalUrl":"https://aoctrl.com/omron/E3S-CT66-L","factsUrl":"https://aoctrl.com/api/mcp/products/E3S-CT66-L","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3S-CT66-L, Water and Oil-resistant Long-range through-beam photoelectric sensor, NPN/PNP selectable, 700 mm sensing distance, M12 4-pin connector.","salesMarkdown":"The Omron E3S-CT66-L is a through-beam photoelectric sensor in a rectangular metal housing rated water and oil-resistant, intended for compact machine zones where cutting fluids or washdown are present. It emits an infrared LED and senses radially at a maximum 700 mm. The output is field-selectable NPN or PNP, and the operating mode toggles L-ON or D-ON, so a single SKU covers both sinking and sourcing architectures. Supply voltage range is 10 to 30 VDC, typical for industrial DC sensor busses. The M12 4-pin pinout follows the standard photoelectric sensor wiring; confirm polarity on the selectable output terminals before powering.","metaTitle":"E3S-CT66-L Omron Oil-Resistant Photoelectric Sensor, 700 mm,","metaDescription":"Active production. Through-beam IR sensor, 700 mm range, NPN/PNP selectable output, M12 connector, oil-resistant metal housing. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Type":"Water and Oil-resistant Long-range","title":"E3S-CT66-L","Output":"NPN/PNP Selectable","Body Type":"Rectangular","Operation":"L-ON/D-ON selectable","Connection":"M12 4-pin connector","description":"E3S-C Oil Resistant Mini Metal Body Photoelectric Sensor|Long-distance compact sensor in oil-resistant metal housing","Light Source":"Infrared LED","Sensing Method":"Through-Beam","Supply Voltage":"10 to 30 VDC","lifecycle_stage":"current","Housing Material":"Metal","Sensing Direction":"Radial","Product Life Cycle":"Active","Max Sensing Distance":"700 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$93.98","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4842b6c3b045f73f498c093d8a4aede8.pdf","sourceUrl":"https://automation.omron.com/en/us/products/family/e3s-c"},"ai":{"faq":[{"question":"When sourcing E3S-CT66-L, what's the closest functional second-source — E3ZM-T61 2M?","answer":"The E3ZM-T61 2M is not a direct second-source. It has 15 m range vs 700 mm, stainless steel vs painted metal, prewired cable vs M12 connector, and fixed NPN vs selectable output. Consider it only if your application tolerates a larger form factor and longer range."},{"question":"What is E3S-CT66-L's listed output?","answer":"NPN/PNP selectable, along with L-ON/D-ON switching mode."},{"question":"Will E3S-CT66-L drop into a panel that was specified around E3ZM-T61 2M without rewiring?","answer":"No — the E3ZM-T61 2M has a prewired 2 m cable; the E3S-CT66-L uses an M12 4-pin connector. You'll need a mating connector or adapt the harness. Also verify panel cutout dimensions as body sizes differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3S-CT66-L","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/E3S-CT66-L when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}