{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"E3T-SL21","brand":"Omron","brandSlug":"omron","productSlug":"E3T-SL21","canonicalUrl":"https://aoctrl.com/omron/E3T-SL21","factsUrl":"https://aoctrl.com/api/mcp/products/E3T-SL21","rawCanonicalId":null},"summary":{"shortDescription":"Omron, E3T Series, Photoelectric Sensor, E3T-SL21, Diffuse NPN, 30 mm Max Sensing, IP67.","salesMarkdown":"## What this sensor brings to your line The E3T-SL21 is an Omron diffuse photoelectric sensor in the E3T series, switching NPN light-on at a 30 mm maximum sensing distance. It detects objects as small as 0.15 mm diameter, making it a solid choice for small-part presence on pick-and-place, feeder bowls, or conveyor gates. Supply is 12-24V DC, output sinks up to 50 mA, and response time is 1 msec. The 2 m prewired bare-wire cable keeps field termination simple. Built-in protections—output reverse polarity, output short-circuit, and supply reverse polarity—cut down on blown outputs during commissioning. IP67 rating means it handles washdown environments without a secondary shroud. ## Mounting and wiring for integrators Rectangular body is 25 mm high, 11 mm deep, 7 mm wide. Includes a right-angle sensing face, indicator lights, and a 2 m prewired bare-wire cable.","metaTitle":"Omron E3T-SL21 Photoelectric Sensor, Diffuse NPN 30mm, IP67","metaDescription":"Omron E3T-SL21 diffuse photoelectric sensor, NPN light-on, 30mm range, 0.15mm min object, IP67, 12-24V DC, 2m cable. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"title":"E3T-SL21","Series":"E3T","Features":"Output Reverse Polarity Protection; Output Short-Cut Protection; Power Supply Reverse Polarity Protection","IP Rating":"IP67","Standards":"CE","Display Qty":"1","description":"Miniature Square Photoelectric Sensor in plastic housing","Product Type":"Photoelectric Sensor","Body Material":"PBT","Overall Depth":"11 mm","Overall Width":"7 mm","Response Time":"1 msec","Output Circuit":"NPN","Overall Height":"25 mm","Sensing Method":"Diffuse","Supply Voltage":"12-24V DC","lifecycle_stage":"current","Display Sell UOM":"EA","Sensor Body Style":"Rectangular","Minimum Object Size":"0.15mm Dia.","Output Circuit Type":"NPN","Sensor Cable Length":"2 m","Supply Voltage Type":"DC-Only","Emitted Sensor Light":"Red Light","Electrical Connection":"Bare Wire","Sensor Switching Mode":"Light On","Load Current - Maximum":"50 mA","Sensor Face Orientation":"Right Angle","DC Supply Voltage Rating":"12-24V DC","Includes Indicator Lights":"Indicator Lights Included","Sensing Distance - Maximum":"30 mm","Sensing Distance - Minimum":"5 mm","Electrical Installation Type":"Prewired Cable","Operating Temperature - Maximum":"131 °F","Operating Temperature - Minimum":"-13 °F"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$80.01 – $203.72","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3d9ddbaee98e45826bf00f2b0650da83.pdf","sourceUrl":null},"ai":{"faq":[{"question":"When sourcing E3T-SL21, what's the closest functional second-source — E3T-SL11?","answer":"The E3T-SL11 is a same-series NPN light-on sensor but with a 15 mm max sensing range instead of the SL21's 30 mm. Body, wiring, and protections are identical. If your application only requires up to 15 mm, the SL11 can serve as an alternate; otherwise stick with the SL21 for the extra range."},{"question":"What is E3T-SL21's listed series?","answer":"E3T-SL21 belongs to the Omron E3T series of miniature photoelectric sensors."},{"question":"What is E3T-SL21's listed features?","answer":"The sensor includes output reverse polarity protection, output short-circuit protection, and power supply reverse polarity protection."},{"question":"Will E3T-SL21 drop into a panel that was specified around E3T-SL11 without rewiring?","answer":"Yes, the E3T-SL21 has the same pinout, supply voltage, cable length, and mounting dimensions as the E3T-SL11. The only difference is sensing range, so no wiring changes are needed for a drop-in swap, but verify that the 30 mm range is either sufficient or intended."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/E3T-SL21","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/E3T-SL21 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}}