{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3SAR31","brand":"Omron","brandSlug":"omron","productSlug":"E3SAR31","canonicalUrl":"https://aoctrl.com/omron/E3SAR31","factsUrl":"https://aoctrl.com/api/mcp/products/E3SAR31","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3S-A series photoelectric proximity sensor, PNP, 2 m sensing distance, 500 µs response, 10-30 VDC, red LED, pre-wired, IP67.","salesMarkdown":"## Sensor identification and key ratings The Omron E3SAR31 is a photoelectric proximity sensor from the E3S-A series, with a PNP output and a 2 m sensing distance in diffuse mode. Response time is rated 500 µs, suitable for moderate-speed object detection on conveyors or packaging lines. The red LED light source and light/dark switching give flexibility for background or foreground detection. Pre-wired cable and IP67 rating allow direct installation in wet or dusty environments without additional conduit sealing. ## Comparing 2 m and 7 m E3S-A variants The E3SAR31 (2 m) shares the same cylindrical housing, pre-wired termination, PNP output, and voltage range as the 7 m E3SAT81. The only functional difference is sensing distance: 2 m vs 7 m. For applications needing longer range, the E3SAT81 (or E3SAT31 with connector) is the alternative; if 2 m meets your target, the E3SAR31 drops in without wiring changes. ## Wiring and integration note PNP output: brown (10-30 VDC supply), blue (common), black (switched load). IP67 rating seals the pre-wired cable entry; avoid cutting the cable in wet zones.","metaTitle":"Omron E3SAR31 Photoelectric Sensor PNP 2m 500µs IP67","metaDescription":"Omron E3SAR31 photoelectric proximity sensor, PNP output, 2 m sensing distance, 500 µs response, 10-30 VDC, red LED, pre-wired, IP67. Sourced to order; submit RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Proximity Sensors"],"specifications":{"title":"Photoelectric Sensor PNP 2m 500us 30V LED, Red Pre-Wired IP67 E3S-A","Series":"E3S-A","Light Type":"LED, Red","Sensor Type":"Photoelectric Proximity Sensor","description":"Photoelectric Sensor PNP 2m 500us 30V LED, Red Pre-Wired IP67 E3S-A","Response Time":"500 us","Switching Type":"Light / Dark ON","lifecycle_stage":"current","Termination Type":"Pre-Wired","Protection Rating":"IP67","Sensing Distance Max.":"2 m","Operating Voltage Max.":"30 V","Operating Voltage Min.":"10 V","Operating Temperature Max.":"55 °C","Operating Temperature Min.":"-25 °C","Optical Sensor Output Type":"PNP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$113.03 – $212.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/90a3c8d6b9d53ed38efa6b7707765d6d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Will the E3SAR31 replace an E3SAT81 without rewiring?","answer":"Yes, the E3SAR31 has the same pre-wired cable, PNP output, and voltage range as the E3SAT81. The only difference is the sensing distance (2 m vs 7 m). Verify that the shorter range meets your detection distance requirements before substitution."},{"question":"What is the operating voltage range?","answer":"10-30 VDC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3SAR31","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/E3SAR31 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}}