{"product_id":"wtb11-2n2461-inductive-proximity-sensor-npn-no-dc-6-36v-10mm-4mm","title":"WTB11-2N2461 Inductive Proximity Sensor NPN NO DC 6-36V 10mm","description":"\u003ch2\u003eWTB11-2N2461 Inductive Proximity Switch – NPN NO, DC 6–36V\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWTB11-2N2461 Inductive Proximity Sensor\u003c\/strong\u003e is a robust, non-contact detection switch designed for reliable metal object sensing in industrial and automation applications. With an NPN Normally Open (NO) output configuration and a wide DC 6–36V operating voltage range, this sensor integrates seamlessly into PLCs, conveyor systems, machine tooling, and robotics setups. Its \u003cstrong\u003e10mm body diameter\u003c\/strong\u003e and \u003cstrong\u003e4mm sensing distance\u003c\/strong\u003e make it ideal for compact mounting in tight spaces where precise detection matters.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e WTB11-2N2461\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e NPN, Normally Open (NO)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e DC 6–36V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Diameter:\u003c\/strong\u003e 10mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensing Distance:\u003c\/strong\u003e 4mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetection Method:\u003c\/strong\u003e Inductive (non-contact metal detection)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e 4-wire configuration for easy integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e Rugged cylindrical body for industrial-grade durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo moving parts\u003c\/strong\u003e — long service life with minimal maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose an Inductive Proximity Sensor?\u003c\/h3\u003e\n\u003cp\u003eInductive proximity sensors detect metallic objects without physical contact, making them exceptionally durable and suited to harsh industrial environments. They are immune to dust, oil, and vibration that would otherwise degrade mechanical switches. Learn more about proximity sensor technology and industrial automation standards at the NIST Intelligent Systems Division.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomated assembly lines and conveyor belt systems\u003c\/li\u003e\n  \u003cli\u003eCNC machine tool positioning and homing\u003c\/li\u003e\n  \u003cli\u003eRobotics and end-of-arm tooling detection\u003c\/li\u003e\n  \u003cli\u003ePackaging machinery and counting systems\u003c\/li\u003e\n  \u003cli\u003eAutomotive manufacturing equipment\u003c\/li\u003e\n  \u003cli\u003eGeneral factory automation and PLC control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring Guide (NPN NO)\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrown wire:\u003c\/strong\u003e Positive power supply (+V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlue wire:\u003c\/strong\u003e Negative \/ Ground (0V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBlack wire:\u003c\/strong\u003e Signal output (NPN NO)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhite wire:\u003c\/strong\u003e Not connected (NC) or shield\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Need\u003c\/h3\u003e\n\u003cp\u003eLooking for compatible control and relay components? Check out these related items from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-scr-solid-state-relay-switch-module-dc3-24v-40a-optocoupler\"\u003e1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does NPN NO mean for this inductive proximity sensor?\u003c\/h4\u003e\n\u003cp\u003eA: NPN stands for the transistor output type — the sensor sinks current to the load. NO (Normally Open) means the output circuit is open (off) when no metal object is detected, and closes (switches on) when a metallic target enters the 4mm sensing range. This is the most common configuration for PLC digital inputs.\u003c\/p\u003e\n\u003ch4\u003eQ: What metals can the WTB11-2N2461 proximity sensor detect?\u003c\/h4\u003e\n\u003cp\u003eA: As an inductive proximity sensor, the WTB11-2N2461 detects ferrous and non-ferrous metals, including steel, iron, aluminum, copper, and brass. Detection range may vary slightly depending on the target material — ferrous metals typically yield the full rated 4mm sensing distance.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this sensor compatible with Arduino or Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, with a simple NPN pull-up circuit or a relay module, this sensor can interface with Arduino, Raspberry Pi, and similar microcontroller platforms. Ensure your control board's input voltage matches the sensor's NPN output level, or use a relay\/optocoupler module for signal isolation.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the operating voltage range of the WTB11-2N2461?\u003c\/h4\u003e\n\u003cp\u003eA: This sensor operates on a wide DC 6–36V supply voltage, making it compatible with 12V and 24V industrial control systems without the need for a dedicated power regulator.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does NPN NO mean for this inductive proximity sensor?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"NPN stands for the transistor output type — the sensor sinks current to the load. NO (Normally Open) means the output circuit is open (off) when no metal object is detected, and closes (switches on) when a metallic target enters the 4mm sensing range. This is the most common configuration for PLC digital inputs.\"}}, {\"@type\": \"Question\", \"name\": \"What metals can the WTB11-2N2461 proximity sensor detect?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"As an inductive proximity sensor, the WTB11-2N2461 detects ferrous and non-ferrous metals, including steel, iron, aluminum, copper, and brass. Detection range may vary slightly depending on the target material — ferrous metals typically yield the full rated 4mm sensing distance.\"}}, {\"@type\": \"Question\", \"name\": \"Is this sensor compatible with Arduino or Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, with a simple NPN pull-up circuit or a relay module, this sensor can interface with Arduino, Raspberry Pi, and similar microcontroller platforms. 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