{"product_id":"magnetic-reed-switch-sensor-module-3-3v-5v-digital-signal-output-magnetic-contact-detection-board-for-arduino-raspberry-pi-esp32","title":"Magnetic Reed Switch Sensor Module 3.3V-5V Digital Signal Output Magnetic Contact Detection Board for Arduino Raspberry Pi ESP32","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eemakefun\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003enone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eis_customized\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003esemi_Choice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cdiv class=\"detailmodule_html\"\u003e\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S9230e710670940cd93ff112bfdc779bes.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe working principle of a magnetic reed switch is very simple. Two magnetized reeds (usually composed of iron and nickel) overlapping at the endpoints are sealed in a glass tube. The two reeds overlap with a small gap (only about a few microns) between them. The contacts on these two reeds are coated with very hard metals, usually rhodium and ruthenium, which greatly improve the switching frequency and product life. The glass tube is filled with high-purity inert gas (such as nitrogen), and some dry spring switches are made into a vacuum state inside to improve their high-pressure performance. The function of a reed is equivalent to that of a magnetic flux conductor. Before operation, the two spring leaves did not come into contact; When a magnetic field is generated by a permanent magnet or electromagnetic coil, the applied magnetic field causes different polarities near the endpoints of the two spring plates. When the magnetic force exceeds the elastic force of the spring plates themselves, these two spring plates will attract and conduct the circuit; When the magnetic field weakens or disappears, the dry spring is released due to its own elasticity, and the contact surface will separate to open the circuit. The reed switch is normally open in the absence of a magnetic field, and when a sufficiently strong magnetic field is generated, the two reeds will be attracted together.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eSchematic diagram\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/emakefun.github.io\/emakefun-docsify\/zh-cn\/ph2.0_sensors\/sensors\/magnetic_switch_sensor\/picture\/magnetic_switch_sensor_schematic.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style='background-color:rgb(252, 220, 0);font-size:22px;font-family:\"times new roman\", times, serif'\u003e\u003cstrong\u003eModule parameters\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable style='border-collapse:collapse;font-family:\"Source Sans Pro\", \"Helvetica Neue\", Arial, sans-serif;font-size:15px;text-align:start;color:rgb(52, 73, 94);background-color:rgb(255, 255, 255);width:930px' align=\"start\"\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003ePin name\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003edescription\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eG\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eGND\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:rgb(248, 248, 248)\"\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eV\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eVCC\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eS\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align:center;border:1px solid rgb(221, 221, 221);padding:6px 13px\" align=\"center\"\u003e\u003cp\u003eWhen there is a magnet on the sensor, output a low level; when there is no magnet on the sensor, output a high level\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cp\u003eSupply voltage: 3V3\/5V\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eConnection method: 3PIN anti reverse DuPont wire\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eModule size: 38.4x 22.4 mm\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003eInstallation method: M4 screws compatible with Lego socket for fixation\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6b786e2256fd4380b4324972ac0c9699m.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6eefd77443f94da89955fcb8388ade71K.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S8cb82dd7401c4e99915b6b11c7bd3a389.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S6c382ca642184e09baea829aa69d6a5ef.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sdc568f836e08498586c9277c5f23fdbaF.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sdcb8348e93e540bbae9eace468c0a36cx.png\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S7a39d1d68859452bbc2409eab960e7d3L.png\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/Sf524379dac4b44de92ba72cd31e295a25.png\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S37398f3a37eb47a498b24e060ba11c82M.png\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae-pic-a1.aliexpress-media.com\/kf\/S82a8950f98d74552aef78abd35f0e4070.png\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cbr\u003e","brand":"Yoeruyo","offers":[{"title":"switch module \/ China Mainland","offer_id":55440791503147,"sku":"14:10#switch module;200007763:201336100","price":24.89,"currency_code":"USD","in_stock":true},{"title":"module with case \/ China Mainland","offer_id":55440791535915,"sku":"14:29#module with case;200007763:201336100","price":23.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/5744\/8747\/files\/S10d5de562733437b869a9ab03c314fa0r.webp?v=1788746692","url":"https:\/\/yoeruyo.com\/products\/magnetic-reed-switch-sensor-module-3-3v-5v-digital-signal-output-magnetic-contact-detection-board-for-arduino-raspberry-pi-esp32","provider":"Yoeruyo","version":"1.0","type":"link"}