{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EE-SX771","brand":"Omron","brandSlug":"omron","productSlug":"EE-SX771","canonicalUrl":"https://icboms.com/omron/EE-SX771","factsUrl":"https://icboms.com/api/mcp/products/EE-SX771","rawCanonicalId":null},"summary":{"shortDescription":"Omron EE-SX771 through-beam optical slot sensor, NPN open-collector Dark-ON output, 5 V supply, 5 mm sensing distance, chassis mount with M3 screw, -25°C to 55°C operating range.","salesMarkdown":"## Through-beam slot sensor for part-present detection The Omron EE-SX771 is a through-beam optical slot sensor with a 5 mm gap, designed for detecting the presence or absence of an object that interrupts the light beam. The NPN open-collector output is configured Dark-ON, meaning the output transistor turns on when the beam is blocked — the standard fail-safe wiring convention for this sensor class. It runs on a fixed 5 V supply and switches up to 35 mA, suitable for direct connection to a PLC input or logic gate. The chassis-mount package with M3 screw holes fits panel or machine-frame installations where a compact, fixed-gap sensor is needed for small-part detection, edge counting, or flag sensing in packaging, assembly, or light industrial automation. ## 5 mm gap and NPN Dark-ON output — fit and wiring The 5 mm gap requires the vane to fit without rubbing. The NPN Dark-ON output pulls low when the beam is blocked. ## Closest functional peer: EE-SPX305-W2A The EE-SPX305-W2A shares the same 5 mm through-beam slot, NPN Dark-ON output, and 5 V supply, but uses a wire-lead connection instead of the EE-SX771's M3 screw terminals, and its temperature range is -10°C to 55°C versus -25°C to 55°C. If your panel wiring prefers a flying-lead pigtail and you can accept the narrower temperature floor, the EE-SPX305-W2A is a drop-in functional swap for the sensing job.","metaTitle":"Omron EE-SX771 Through-Beam Slot Sensor, NPN Dark-ON, 5V, 5mm","metaDescription":"Omron EE-SX771 optical slot sensor, through-beam, 5mm gap, NPN open-collector Dark-ON output, 5V supply. Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"output_type":"NPN - Open Collector/Dark-ON","package_type":"Bag","sensing_type":"Through-Beam","mounting_type":"Chassis Mount, M3 Screw","product_status":"Active","lifecycle_stage":"current","supply_voltage_v":"5.0","switching_current_a":"0.035","sensing_distance_max_mm":"0.197","Operating Temperature High":"-25°C to 55°C(TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.60","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.ia.omron.com/data_pdf/cat/ee-sx77_87_ds_e_7_6_csm484.pdf?id=435","sourceUrl":null},"ai":{"faq":[{"question":"What is the output type of EE-SX771?","answer":"The output is NPN open-collector with Dark-ON logic — the transistor turns on when the light beam is blocked."},{"question":"What is the equivalent part for EE-SX771?","answer":"The EE-SPX305-W2A is the closest functional equivalent, sharing the same 5 mm slot, NPN Dark-ON output, and 5 V supply, but with wire-lead connection and a -10°C to 55°C temperature range."},{"question":"Can EE-SX771 be used with a 5V supply?","answer":"Yes, the EE-SX771 is designed for a fixed 5 V supply rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/omron/EE-SX771","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/omron/EE-SX771 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}