{"product_id":"sn04-proximity-switch-4mm-inductive-position-sensor-auto-leveling","title":"SN04 Proximity Switch 4mm – Inductive Auto Leveling Sensor","description":"\u003ch2\u003eSN04 Inductive Proximity Switch – 4mm Detection, Auto-Leveling Position Sensor\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSN04 Proximity Switch\u003c\/strong\u003e is a compact, high-performance inductive position sensor designed for precise, non-contact object detection. With a \u003cstrong\u003e4mm detection distance\u003c\/strong\u003e, wide operating voltage range, and IP67 protection rating, it's ideal for CNC machines, 3D printers, robotics, automation systems, and industrial control applications. Available in multiple configurations — SN04-N, SN04-N2, SN04-P, SN04-P2, and SN04-Y — to suit NPN, PNP, and various output wiring setups.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModels:\u003c\/strong\u003e SN04-N \/ SN04-N2 \/ SN04-P \/ SN04-P2 \/ SN04-Y\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 10V – 30V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Consumption:\u003c\/strong\u003e Max. 5 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e Max. 300 mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetection Distance:\u003c\/strong\u003e 4mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetection Type:\u003c\/strong\u003e Inductive (metal object sensing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResponse Frequency:\u003c\/strong\u003e Up to 500 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Length:\u003c\/strong\u003e 145 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Class:\u003c\/strong\u003e IP67 (dust-tight \u0026amp; waterproof)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable plastic housing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CCC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 Year\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the SN04 Proximity Switch?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eNon-contact sensing\u003c\/strong\u003e — no mechanical wear, long service life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIP67 waterproof rating\u003c\/strong\u003e — reliable in dusty or wet environments\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWide voltage range (10–30V DC)\u003c\/strong\u003e — compatible with most control systems\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh response frequency (500Hz)\u003c\/strong\u003e — fast and accurate object detection\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eMultiple output types\u003c\/strong\u003e — NPN\/PNP variants for flexible wiring\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e1.45m cable\u003c\/strong\u003e — sufficient reach for most installation scenarios\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact cylindrical form factor\u003c\/strong\u003e — easy to mount in tight spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e3D printer auto bed leveling (e.g. Anet, Creality)\u003c\/li\u003e\n  \u003cli\u003eCNC machine tool position detection\u003c\/li\u003e\n  \u003cli\u003eIndustrial conveyor and automation systems\u003c\/li\u003e\n  \u003cli\u003eRobotics and motion control\u003c\/li\u003e\n  \u003cli\u003eMetal object proximity detection on assembly lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between SN04-N and SN04-P proximity switches?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003cstrong\u003eSN04-N\u003c\/strong\u003e features an NPN (normally open) output, meaning it pulls the output signal LOW when an object is detected. The \u003cstrong\u003eSN04-P\u003c\/strong\u003e features a PNP (normally open) output, pulling the signal HIGH upon detection. Choose NPN for controllers that use a ground-referenced input, and PNP for those requiring a positive voltage trigger. The SN04-N2 and SN04-P2 variants are the normally-closed versions of each, and SN04-Y is a special output configuration.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the SN04 proximity switch compatible with 3D printers for auto bed leveling?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The SN04 series is widely used as an \u003cstrong\u003eauto bed leveling sensor\u003c\/strong\u003e in 3D printers. It works well with popular control boards that operate on 12V or 24V DC systems. Make sure to select the correct output type (NPN or PNP) that matches your printer's control board specifications.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the IP67 rating mean for this sensor?\u003c\/h4\u003e\n\u003cp\u003eA: An \u003cstrong\u003eIP67 protection rating\u003c\/strong\u003e means the SN04 proximity switch is fully dust-tight and can withstand temporary immersion in water up to 1 meter for 30 minutes. This makes it suitable for use in demanding industrial environments where exposure to dust, coolant, or moisture is expected.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum detection distance of the SN04 sensor?\u003c\/h4\u003e\n\u003cp\u003eA: The SN04 proximity switch has a nominal \u003cstrong\u003edetection distance of 4mm\u003c\/strong\u003e for standard ferrous metal targets. Actual sensing range may vary slightly depending on the target material size and type.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between SN04-N and SN04-P proximity switches?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The SN04-N features an NPN (normally open) output, meaning it pulls the output signal LOW when an object is detected. The SN04-P features a PNP (normally open) output, pulling the signal HIGH upon detection. Choose NPN for controllers that use a ground-referenced input, and PNP for those requiring a positive voltage trigger. 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Actual sensing range may vary slightly depending on the target material size and type.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"SN04 Proximity Switch 4mm – Inductive Auto Leveling Sensor\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/sn04-proximity-switch-4mm-inductive-position-sensor-auto-leveling\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"SN04-P2","offer_id":44167743438935,"sku":"14:365458#SN04-P2","price":11.76,"currency_code":"USD","in_stock":true},{"title":"SN04-P","offer_id":44167743471703,"sku":"14:173#SN04-P","price":11.76,"currency_code":"USD","in_stock":true},{"title":"SN04-Y","offer_id":44167743504471,"sku":"14:350850#SN04-Y","price":11.76,"currency_code":"USD","in_stock":true},{"title":"SN04-N2","offer_id":44167743537239,"sku":"14:193#SN04-N2","price":11.76,"currency_code":"USD","in_stock":true},{"title":"SN04-N","offer_id":44167743570007,"sku":"14:771#SN04-N","price":11.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S56474c3b2f0a40eba1ff1ee89df6f8f2L.webp?v=1786763507","url":"https:\/\/axlcustomersupport.com\/products\/sn04-proximity-switch-4mm-inductive-position-sensor-auto-leveling","provider":"Axl","version":"1.0","type":"link"}