{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3RA-TP21","brand":"Omron","brandSlug":"omron","productSlug":"E3RA-TP21","canonicalUrl":"https://aoctrl.com/omron/E3RA-TP21","factsUrl":"https://aoctrl.com/api/mcp/products/E3RA-TP21","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3RA-TP21, M18 threaded cylindrical plastic body through-beam photoelectric sensor, PNP output, 20 m sensing distance, M12 4-pin connector, 10-30 VDC supply.","salesMarkdown":"The E3RA-TP21 is an Omron through-beam photoelectric sensor in a right-angle M18 plastic threaded cylindrical body with radial sensing direction. It uses a red LED light source and provides a PNP output, selectable Light-ON or Dark-ON via a switch. Supply voltage is 10 to 30 VDC, and the maximum sensing distance is 20 m. Connection is via an M12 4-pin connector. The part is listed as active and mature in the product lifecycle.","metaTitle":"Omron E3RA-TP21 M18 Photoelectric Sensor, PNP, 20 m","metaDescription":"Active mature through-beam sensor, M18 plastic body, PNP output, 20 m range, M12 connector, 10-30 VDC. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Size":"M18","Type":"Short body","title":"E3RA-TP21","Output":"PNP","Body Type":"Threaded Cylindrical","Operation":"L-ON/D-ON selectable","Connection":"M12 4-pin connector","description":"E3RA right angle plastic body M18 barrel photoelectric sensor|Plastic body M18 photoelectric sensor with a right angle","Light Source":"Red LED","Sensing Method":"Through-beam","Supply Voltage":"10 to 30 VDC","lifecycle_stage":"mature","Housing Material":"Plastic","Sensing Direction":"Radial","Product Life Cycle":"Active","Max Sensing Distance":"20 m"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a9cdc4ad7c5f2d0da1227005856ee59e.pdf","sourceUrl":"https://automation.omron.com/en/us/products/family/e3ra"},"ai":{"faq":[{"question":"When sourcing the E3RA-TP21, what is the closest functional second-source?","answer":"The E3ZM-T81 2M is a PNP through-beam but has a stainless steel body and prewired cable instead of the M12 connector. The E3ZM-T61 2M is NPN output. Neither is a direct drop-in without mechanical or wiring changes."},{"question":"What is the listed size of the E3RA-TP21?","answer":"The barrel diameter is M18, and the body type is threaded cylindrical with a short body profile."},{"question":"Will the E3RA-TP21 drop into a panel specified around the E3ZM-T61 2M?","answer":"No. The E3ZM-T61 2M is an NPN output with a stainless steel body and prewired cable; the E3RA-TP21 is PNP with a plastic body and M12 connector. Wiring and mechanical mounting differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3RA-TP21","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/E3RA-TP21 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}}