{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3ZM-T81 2M","brand":"Omron","brandSlug":"omron","productSlug":"E3ZM-T81-2M","canonicalUrl":"https://aoctrl.com/omron/E3ZM-T81-2M","factsUrl":"https://aoctrl.com/api/mcp/products/E3ZM-T81%202M","rawCanonicalId":null},"summary":{"shortDescription":"Omron E3ZM-T81 2M Through-Beam Photoelectric Sensor Set, PNP, 15 m, IP67/IP69K, Stainless Steel, 2 m Cable.","salesMarkdown":"The Omron E3ZM-T81 2M is a through-beam photoelectric sensor set from the E3ZM series, delivering a 15 m sensing distance with a PNP output and a stainless steel housing rated IP67/IP69K. The set includes both transmitter and receiver, prewired with a 2 m bare-end cable, and operates on 10-30V DC with a 100 mA maximum load. The PNP output is selectable Light-On/Dark-On, with a 1 ms response time, and the sensor detects objects as small as 12 mm diameter opaque. ## PNP vs NPN — Choosing Between E3ZM-T81 and E3ZM-T61 The E3ZM-T81 2M (PNP) and E3ZM-T61 2M (NPN) are identical in every other spec: 15 m sensing range, IP69K stainless steel body, 2 m cable, IR emitter. The only difference is output circuit — PNP vs NPN. For a sourcing decision, that means the T81 is the PNP variant; if your PLC input card expects sourcing outputs, this is the unit. The T61 sinks to common. No rewiring between the two — same pinout — but the output logic changes (active high vs low).","metaTitle":"Omron E3ZM-T81 2M Through-Beam Sensor Set, 15 m, PNP, IP69K","metaDescription":"Omron E3ZM-T81 2M through-beam photoelectric sensor set, 15 m sensing distance, PNP output, IP67/IP69K stainless steel. 10-30V DC, 2 m cable. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"title":"OMRON Photoelectric Sensor Set: Non-Terminated Cable, 10-30V DC, PNP","Series":"E3ZM","Features":"Output Reverse Polarity Protection; Output Short Circuit Protection; Power Supply Reverse Polarity Protection","IP Rating":"IP67; IP69K","Standards":"CE","Display Qty":"1","description":"OMRON Photoelectric Sensor Set: Non-Terminated Cable, 10-30V DC, PNP","Body Material":"Stainless Steel","Overall Depth":"21 mm","Overall Width":"11 mm","Response Time":"1 msec","Output Circuit":"PNP","Overall Height":"32 mm","Sensing Method":"Through-Beam","Supply Voltage":"10-30V DC","lifecycle_stage":"current","Display Sell UOM":"EA","Sensor Body Style":"Rectangular","Minimum Object Size":"12mm Dia. Opaque","Output Circuit Type":"PNP","Sensor Cable Length":"2 m","Supply Voltage Type":"DC-Only","Emitted Sensor Light":"Infrared","Electrical Connection":"Bare Wire","Sensor Switching Mode":"Selectable Light On/Dark On","Load Current - Maximum":"100 mA","Sensor Face Orientation":"Right Angle","DC Supply Voltage Rating":"10-30V DC","Includes Indicator Lights":"Indicator Lights Included","Sensing Distance - Maximum":"15 m","Electrical Installation Type":"Prewired Cable","Through Beam Sensor Component":"Photoelectric Sensor Transmitter and Receiver Set","Operating Temperature - Maximum":"131 °F","Operating Temperature - Minimum":"-13 °F"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$116.59","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f2d8e11b4836067b28466e736b08fc02.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the sensing distance of the Omron E3ZM-T81 2M?","answer":"15 m through-beam."},{"question":"Is the Omron E3ZM-T81 2M PNP or NPN?","answer":"PNP."},{"question":"What is the IP rating of the Omron E3ZM-T81 2M?","answer":"IP67 and IP69K."},{"question":"What is the cable length of the E3ZM-T81 2M?","answer":"2 m, prewired with bare wires."},{"question":"What is the difference between E3ZM-T81 and E3ZM-T61?","answer":"The E3ZM-T81 2M has a PNP output, while the E3ZM-T61 2M has an NPN output. All other specs are identical."},{"question":"Will E3ZM-T81 2M drop into a panel that was specified around E3ZM-T61 2M without rewiring?","answer":"The E3ZM-T81 2M shares the same housing, mounting, and cable arrangement as the E3ZM-T61 2M, so it physically fits. However, the output is PNP instead of NPN, so wiring or PLC input configuration must account for the change in output logic."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3ZM-T81-2M","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/E3ZM-T81-2M 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}}