{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"WT34-R220","brand":"SICK","brandSlug":"sick","productSlug":"WT34-R220","canonicalUrl":"https://aoctrl.com/sick/WT34-R220","factsUrl":"https://aoctrl.com/api/mcp/products/WT34-R220","rawCanonicalId":null},"summary":{"shortDescription":"SICK W34 series, diffuse reflection photoelectric proximity sensor with background suppression, WT34-R220, 2.5 m sensing range, relay changeover output, IP67.","salesMarkdown":"The SICK WT34-R220 is a diffuse reflection photoelectric proximity sensor with background suppression from the W34 series. It detects objects up to 2.5 m with a minimum sensing distance of 100 mm, using an LED infrared light source. The relay changeover contact output handles up to 4 A at 250 V, switching light-ON or dark-ON. Response time is 10 ms. The 2.5 m sensing range with background suppression means the sensor ignores reflective backgrounds beyond the set point — useful on conveyors where the belt or a far wall could cause false triggers. The 100 mm minimum sensing distance sets the close-in blind zone; objects nearer than that won't be reliably detected. The relay output (1 changeover contact) rated at 4 A / 250 V can switch a small contactor or PLC input directly, but watch the inrush if driving a DC load — the relay's mechanical life is the limiting factor, not the 4 A continuous. The 10 ms response time is typical for a relay-output photoelectric; fine for box detection on a slow line, too slow for high-speed counting. IP67 means the housing is dust-tight and protected against temporary immersion — good for washdown areas but not continuous submersion. The M16 terminal connection allows field wiring without a separate connector, though you'll need to gland the cable properly to maintain the seal. This class of background-suppression photoelectric sensor is common on packaging lines, material handling conveyors, and automated assembly stations — anywhere you need to detect an object's presence against a variable or reflective background. The 2.5 m range covers most short-to-medium distance detection zones inside a machine guard.","metaTitle":"SICK WT34-R220 Photoelectric Proximity Sensor, 2.5 m Range","metaDescription":"SICK WT34-R220 diffuse reflection photoelectric sensor with background suppression. 2.5 m sensing range, relay output, IP67. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Width":"27 mm","Height":"70 mm","Length":"70 mm","Series":"W34","Light Type":"LED, Infrared","Sensor Type":"Photoelectric Proximity Sensor, Background Suppression","Load Current":"4 A","Response Time":"10 ms","Switching Type":"Light-ON / Dark-ON","lifecycle_stage":"current","Termination Type":"Terminal, M16","Protection Rating":"IP67","Sensing Distance Max.":"2.5 m","Sensing Distance Min.":"100 mm","Operating Voltage Max.":"250 V","Operating Voltage Min.":"20 V","Operating Temperature Max.":"60 °C","Operating Temperature Min.":"-40 °C","Optical Sensor Output Type":"Relay, 1 Changeover Contact"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$245.11 – $340.63","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/79ba141f4b8de3e5e9325e1fa4d012bc.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/WT34-R220/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the WT34-R220?","answer":"The WTB27-3S1511 is a similar background-suppression photoelectric from the W27-3 series, but with a shorter 1.6 m range, cable termination, and a slightly different housing (24.6 mm wide vs 27 mm). It will not drop into the same mounting hole pattern without adapter brackets."},{"question":"What are the key ratings of the WT34-R220?","answer":"Sensing range 100 mm to 2.5 m, relay output 4 A at 250 V, response time 10 ms, IP67, operating temperature -40 °C to 60 °C."},{"question":"What compliance documentation is available for the WT34-R220?","answer":"The evidence does not list specific certifications (UL, CE, RoHS). Request the manufacturer's declaration at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/sick/WT34-R220","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/sick/WT34-R220 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}