{"product_id":"41f-hall-effect-sensor-to-92-arduino-magnetic-switch","title":"41F Hall Effect Sensors TO-92 Arduino Magnetic Switch","description":"\u003cstyle\u003e\n  .nzn-desc {\n    width: 100%;\n    max-width: 1400px;\n    margin: 0 auto;\n    font-family: inherit;\n    color: #101114;\n  }\n\n  .nzn-desc,\n  .nzn-desc * {\n    box-sizing: border-box;\n  }\n\n  .nzn-desc .nzn-tabs {\n    width: 100%;\n    max-width: 100%;\n    display: flex;\n    gap: 30px;\n    border-bottom: 1px solid #e7e7e7;\n    overflow-x: auto;\n    overflow-y: hidden;\n    scrollbar-width: none;\n    min-height: 55px;\n    align-items: flex-end;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .nzn-desc .nzn-tabs::-webkit-scrollbar {\n    display: none;\n  }\n\n  .nzn-desc .nzn-tab {\n    flex: 0 0 auto;\n    background: none;\n    border: 0;\n    padding: 16px 0;\n    font: inherit;\n    font-size: 14px;\n    font-weight: 800;\n    white-space: nowrap;\n    border-bottom: 3px solid transparent;\n    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width: fit-content;\n      max-width: 100%;\n    }\n\n    .nzn-desc .nzn-checks li {\n      align-items: flex-start;\n      gap: 10px;\n      font-size: 14px;\n      text-align: left;\n    }\n\n    .nzn-desc .nzn-checks li::before {\n      margin-top: 2px;\n    }\n\n    .nzn-desc .nzn-uses {\n      grid-template-columns: 1fr;\n    }\n\n    .nzn-desc .nzn-specs div {\n      grid-template-columns: 1fr;\n      gap: 4px;\n      padding: 13px 10px;\n    }\n\n    .nzn-desc .nzn-section-title {\n      text-align: left;\n      padding-top: 0;\n      margin-bottom: 22px;\n    }\n\n    .nzn-desc .nzn-started {\n      padding: 20px 16px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"nzn-desc\"\u003e\n  \u003cdiv class=\"nzn-tabs\"\u003e\n    \u003cbutton class=\"nzn-tab is-active\" type=\"button\" data-tab=\"overview\"\u003eOverview\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"specifications\"\u003eSpecifications\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"getting-started\"\u003eGetting Started\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"uses\"\u003eCommon Uses\u003c\/button\u003e\n    \u003cbutton class=\"nzn-tab\" type=\"button\" data-tab=\"faqs\"\u003eFAQs\u003c\/button\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"nzn-card\"\u003e\n    \u003cdiv class=\"nzn-panel is-active\" data-panel=\"overview\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003cdiv class=\"nzn-overview\"\u003e\n          \u003cdiv class=\"nzn-overview-copy\"\u003e\n            \u003cp\u003eThe 41F-551 Hall Effect Sensor is a compact digital magnetic switch sensor in a TO-92 package designed for Arduino, ESP32, RPM sensing, wheel speed detection, magnetic proximity sensing, robotics, and automation projects.\u003c\/p\u003e\n\n            \u003cul class=\"nzn-checks\"\u003e\n              \u003cli\u003eDigital Hall Effect magnetic switch output\u003c\/li\u003e\n              \u003cli\u003eCompact TO-92 package\u003c\/li\u003e\n              \u003cli\u003eWide 3V – 24V operating voltage\u003c\/li\u003e\n              \u003cli\u003eFast switching response time\u003c\/li\u003e\n              \u003cli\u003eLow power consumption\u003c\/li\u003e\n              \u003cli\u003eCompatible with Arduino, ESP32 \u0026amp; Raspberry Pi\u003c\/li\u003e\n              \u003cli\u003eBreadboard-friendly pin spacing\u003c\/li\u003e\n              \u003cli\u003eIdeal for RPM \u0026amp; proximity sensing\u003c\/li\u003e\n            \u003c\/ul\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-started\"\u003e\n            \u003ch3\u003eQuick Wiring\u003c\/h3\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e1\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eFace the flat side toward you\u003c\/strong\u003e\n                \u003cp\u003eThe “41F 551” marked side should face toward you when identifying pins.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e2\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eConnect VCC\u003c\/strong\u003e\n                \u003cp\u003ePin 1 → 3V–24V supply voltage.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e3\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eConnect GND\u003c\/strong\u003e\n                \u003cp\u003ePin 2 → Ground.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv class=\"nzn-step\"\u003e\n              \u003cspan\u003e4\u003c\/span\u003e\n              \u003cdiv\u003e\n                \u003cstrong\u003eRead digital output\u003c\/strong\u003e\n                \u003cp\u003ePin 3 → Digital input pin on your microcontroller.\u003c\/p\u003e\n              \u003c\/div\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e The 41F-551 is a digital Hall switch sensor — output changes state when a magnetic field is detected.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"specifications\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eSpecifications\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-specs\"\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eModel\u003c\/span\u003e\u003cstrong\u003e41F-551\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eSensor Type\u003c\/span\u003e\u003cstrong\u003eDigital Hall Effect Switch\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003ePackage\u003c\/span\u003e\u003cstrong\u003eTO-92\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOperating Voltage\u003c\/span\u003e\u003cstrong\u003e3V – 24V DC\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOutput Type\u003c\/span\u003e\u003cstrong\u003eDigital Open Collector\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOutput State\u003c\/span\u003e\u003cstrong\u003eLOW when magnet detected\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOperating Current\u003c\/span\u003e\u003cstrong\u003eTypically 4mA\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eResponse Time\u003c\/span\u003e\u003cstrong\u003eFast switching response\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eMagnetic Polarity\u003c\/span\u003e\u003cstrong\u003eSouth Pole Trigger\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eOperating Temperature\u003c\/span\u003e\u003cstrong\u003e-40°C to +85°C\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eLead Pitch\u003c\/span\u003e\u003cstrong\u003e1.27mm\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003ePackage Width\u003c\/span\u003e\u003cstrong\u003e4.1mm typical\u003c\/strong\u003e\n\u003c\/div\u003e\n          \u003cdiv\u003e\n\u003cspan\u003eLead Length\u003c\/span\u003e\u003cstrong\u003e14mm+ typical\u003c\/strong\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e This sensor outputs a digital LOW signal when the correct magnetic pole is detected.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"getting-started\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003cdiv class=\"nzn-started\"\u003e\n          \u003ch3\u003eGetting Started\u003c\/h3\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e1\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eInsert into breadboard\u003c\/strong\u003e\n              \u003cp\u003eThe TO-92 package is breadboard compatible with standard 2.54mm spacing.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e2\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eConnect power\u003c\/strong\u003e\n              \u003cp\u003eConnect VCC and GND to your Arduino or ESP32.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e3\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eConnect output pin\u003c\/strong\u003e\n              \u003cp\u003eConnect OUT to a digital GPIO input.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-step\"\u003e\n            \u003cspan\u003e4\u003c\/span\u003e\n            \u003cdiv\u003e\n              \u003cstrong\u003eBring magnet close\u003c\/strong\u003e\n              \u003cp\u003eThe output switches LOW when the correct magnetic pole approaches the sensor.\u003c\/p\u003e\n            \u003c\/div\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e Magnetic field strength, polarity, and distance affect switching performance.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"uses\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eCommon Uses\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-uses\"\u003e\n          \u003cdiv class=\"nzn-use\"\u003eWheel RPM sensing\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eMotor speed detection\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eDoor open\/close detection\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eMagnetic proximity sensing\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eArduino digital sensor projects\u003c\/div\u003e\n          \u003cdiv class=\"nzn-use\"\u003eRobotics \u0026amp; automation systems\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e Hall sensors are commonly used as contactless switches for reliable long-life sensing.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"nzn-panel\" data-panel=\"faqs\"\u003e\n      \u003cdiv class=\"nzn-panel-content\"\u003e\n        \u003ch3 class=\"nzn-section-title\"\u003eCommon Questions\u003c\/h3\u003e\n\n        \u003cdiv class=\"nzn-faq\"\u003e\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eIs this a digital or analog Hall sensor?\u003c\/strong\u003e\n            \u003cp\u003eThis is a digital Hall switch sensor with ON\/OFF output behaviour.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eWill this work with Arduino?\u003c\/strong\u003e\n            \u003cp\u003eYes. Connect the OUT pin to any digital GPIO pin and detect HIGH\/LOW state changes.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eWhat happens when a magnet is near?\u003c\/strong\u003e\n            \u003cp\u003eThe sensor output switches LOW when the correct magnetic pole approaches the sensor.\u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"nzn-faq-item\"\u003e\n            \u003cstrong\u003eDoes this work on a breadboard?\u003c\/strong\u003e\n            \u003cp\u003eYes. The TO-92 package is fully breadboard compatible.\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"nzn-note\"\u003e\n\u003cstrong\u003ePlease note:\u003c\/strong\u003e Magnetic field strength, polarity, and distance affect switching performance.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript\u003e\n  document.addEventListener('click', function(event) {\n    const tab = event.target.closest('.nzn-desc .nzn-tab');\n    if (!tab) return;\n\n    const wrapper = tab.closest('.nzn-desc');\n    if (!wrapper) return;\n\n    const target = tab.getAttribute('data-tab');\n\n    wrapper.querySelectorAll('.nzn-tab').forEach(function(item) {\n      item.classList.remove('is-active');\n    });\n\n    wrapper.querySelectorAll('.nzn-panel').forEach(function(panel) {\n      panel.classList.remove('is-active');\n    });\n\n    tab.classList.add('is-active');\n\n    const panel = wrapper.querySelector('[data-panel=\"' + target + '\"]');\n    if (panel) panel.classList.add('is-active');\n  });\n\u003c\/script\u003e","brand":"NZN Electronics","offers":[{"title":"10 Pack","offer_id":42756166221920,"sku":"41F-HALL-TO92","price":3.99,"currency_code":"NZD","in_stock":true},{"title":"25 Pack","offer_id":42756166254688,"sku":"41F-HALL-TO93","price":6.49,"currency_code":"NZD","in_stock":true},{"title":"50 Pack","offer_id":42756166287456,"sku":"41F-HALL-TO94","price":8.89,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/41F-551-Product-Hero.png?v=1778849423","url":"https:\/\/www.nznelectronics.co.nz\/products\/41f-hall-effect-sensor-to-92-arduino-magnetic-switch","provider":"NZN Electronics","version":"1.0","type":"link"}