{"product_id":"ld2410b-p-24ghz-human-presence-sensor","title":"LD2410B-P 24GHz Human Presence Sensor","description":"\u003cp\u003eThe \u003cstrong\u003eLD2410B-P 24GHz radar presence sensor\u003c\/strong\u003e packs human-presence detection into a \u003cstrong\u003eslim 35×7mm\u003c\/strong\u003e module with \u003cstrong\u003e1.27mm-spaced pins\/pads\u003c\/strong\u003e, making it a useful option for projects where PCB space is limited. It uses FMCW radar to sense both normal body movement and the much smaller movements made by someone who is sitting, standing or otherwise remaining relatively still.\u003c\/p\u003e\n\u003cp\u003eThis makes it particularly useful where a conventional PIR sensor can fall short. PIR sensors detect changes in infrared energy as a warm body moves through their field of view, whereas the LD2410B-P can continue responding to subtle movement after someone has stopped walking around.\u003c\/p\u003e\n\u003cp\u003eThe module uses the LD2410-compatible UART protocol and works with established software including Nick Reynolds' \u003ca href=\"https:\/\/github.com\/ncmreynolds\/ld2410\" rel=\"noopener\" title=\"LD2410 Arduino library\" target=\"_blank\"\u003eLD2410 Arduino library\u003c\/a\u003e and the \u003ca href=\"https:\/\/esphome.io\/components\/sensor\/ld2410\/\" rel=\"noopener\" title=\"ESPHome LD2410 component\" target=\"_blank\"\u003eESPHome LD2410 component\u003c\/a\u003e. Alongside a simple digital occupied\/unoccupied output, its UART connection provides moving and stationary target information, approximate distance and radar energy data.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBluetooth monitoring and configuration\u003c\/strong\u003e is also supported, allowing detection distance, sensitivity and other parameters to be adjusted using compatible software such as HLKRadarTool (\u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.hlk.hlkradartool\" rel=\"noopener\" title=\"HLKRadarTool for Android\" target=\"_blank\"\u003eAndroid\u003c\/a\u003e \/ \u003ca href=\"https:\/\/apps.apple.com\/gb\/app\/hlkradartool\/id1638651152\" rel=\"noopener\" title=\"HLKRadarTool for iOS\" target=\"_blank\"\u003eiOS\u003c\/a\u003e).\u003c\/p\u003e\n\u003cp\u003eAs radar signals can pass through some non-metallic materials, the sensor may also pick up movement through thin doors, walls or plastic enclosures. Positioning the module carefully and adjusting its per-distance sensitivity settings can help limit detection to the area you actually want to monitor.\u003c\/p\u003e\n\u003cp\u003eIt's well suited to embedded occupancy sensing, automatic lighting, smart-home projects, equipment wake-up systems and other applications where detecting someone who isn't moving around much is important.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e the LD2410B-P uses \u003cstrong\u003e1.27mm pin spacing\u003c\/strong\u003e, so it \u003cstrong\u003ewill not plug directly into a standard 2.54mm solderless breadboard\u003c\/strong\u003e. Its narrow format is better suited to custom PCBs or just manually soldering wires to the pads. For easy breadboard prototyping, consider the \u003ca href=\"\/products\/ld2410c-24ghz-human-presence-sensor\" title=\"LD2410C 24GHz Human Presence Sensor\"\u003eLD2410C with 2.54mm pins\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThis listing is available \u003cstrong\u003ewith a pre-soldered 1.27mm header or as an unsoldered\/headerless module\u003c\/strong\u003e. The headerless version is useful when integrating the sensor directly into your own PCB, enclosure or wiring arrangement. \u003cstrong\u003ePlease select an option before adding to your cart.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhich presence sensor should I choose?\u003c\/h2\u003e\n\u003cp\u003eThe LD2410C, LD2410B-P and LD2420 all use 24GHz radar for human-presence sensing, but they differ in physical layout, power requirements, configuration method and software support.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e 24GHz presence sensors are frequently marketed as “mmWave” devices. More precisely, a 24GHz signal has a wavelength of approximately 12.5mm, slightly longer than the conventionally defined millimetre-wave range of 10mm to 1mm.\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/ld2410c-24ghz-human-presence-sensor\" title=\"LD2410C 24GHz Human Presence Sensor\"\u003e\u003cstrong\u003eLD2410C\u003c\/strong\u003e\u003c\/a\u003e offers similar LD2410 sensing and software support in a wider, breadboard-friendly format with 2.54mm pins.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003eLD2410B-P (this product)\u003c\/strong\u003e provides LD2410 sensing, Bluetooth configuration and established software compatibility in a slim 35 × 7mm format, with headerless and pre-soldered options available.\u003c\/li\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/ld2420-24ghz-human-presence-sensor\" title=\"LD2420 24GHz Human Presence Sensor\"\u003e\u003cstrong\u003eLD2420\u003c\/strong\u003e\u003c\/a\u003e is a separate native-3.3V design using its own serial protocol and threshold-based calibration system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePresence sensor comparison\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 509.438px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 19.5938px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 19.5938px;\"\u003e\u003ca href=\"\/products\/ld2410c-24ghz-human-presence-sensor\" title=\"LD2410C 24GHz Human Presence Sensor\"\u003eLD2410C\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 19.5938px;\"\u003e\u003cstrong\u003eLD2410B-P\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 19.5938px;\"\u003e\u003ca href=\"\/products\/ld2420-24ghz-human-presence-sensor\" title=\"LD2420 24GHz Human Presence Sensor\"\u003eLD2420\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 19.5938px;\"\u003e\u003cstrong\u003eSupply voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 19.5938px;\"\u003e5V\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 19.5938px;\"\u003e5V\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 19.5938px;\"\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 19.5938px;\"\u003e\u003cstrong\u003eSignal levels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 19.5938px;\"\u003e3.3V compatible\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 19.5938px;\"\u003e3.3V compatible\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 19.5938px;\"\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 19.5938px;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 19.5938px;\"\u003eBluetooth or UART\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 19.5938px;\"\u003eBluetooth or UART\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 19.5938px;\"\u003eUART\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 58.7812px;\"\u003e\u003cstrong\u003eReported target information\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 58.7812px;\"\u003eSeparate moving and stationary target data\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 58.7812px;\"\u003eSeparate moving and stationary target data\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 58.7812px;\"\u003ePresence, distance and radar energy data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 58.7812px;\"\u003e\u003cstrong\u003eDetection tuning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 58.7812px;\"\u003eSeparate moving and stationary sensitivity for each distance gate\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 58.7812px;\"\u003eSeparate moving and stationary sensitivity for each distance gate\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 58.7812px;\"\u003ePer-gate trigger and hold thresholds with calibration support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 58.7812px;\"\u003e\u003cstrong\u003eTypical maximum range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 58.7812px;\"\u003eApproximately 6m\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 58.7812px;\"\u003eApproximately 6m\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 58.7812px;\"\u003eUp to approximately 8m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 58.7812px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 58.7812px;\"\u003e\u003cstrong\u003eArduino compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 58.7812px;\"\u003eEstablished LD2410 libraries\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 58.7812px;\"\u003eEstablished LD2410 libraries\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 58.7812px;\"\u003eUses a separate LD2420 protocol and software integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 39.1875px;\"\u003e\u003cstrong\u003eESPHome compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 39.1875px;\"\u003eESPHome LD2410 component\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 39.1875px;\"\u003eESPHome LD2410 component\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 39.1875px;\"\u003eSeparate ESPHome LD2420 component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 39.1875px;\"\u003e\u003cstrong\u003ePhysical format\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 39.1875px;\"\u003eCompact, breadboard-friendly PCB\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 39.1875px;\"\u003eLong, narrow PCB\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 39.1875px;\"\u003eCompact square PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 39.1875px;\"\u003e\u003cstrong\u003eHeader options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 39.1875px;\"\u003ePre-soldered header\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 39.1875px;\"\u003ePre-soldered or headerless variant\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 39.1875px;\"\u003ePre-soldered header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.375px;\"\u003e\n\u003ctd style=\"width: 19.1657%; height: 78.375px;\"\u003e\u003cstrong\u003eBest suited to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 26.2807%; height: 78.375px;\"\u003eGeneral prototyping, Bluetooth tuning and established software support\u003c\/td\u003e\n\u003ctd style=\"width: 25.558%; height: 78.375px;\"\u003eCompact embedded projects and builds needing a narrow PCB\u003c\/td\u003e\n\u003ctd style=\"width: 23.9955%; height: 78.375px;\"\u003eNative-3.3V projects and threshold-based calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e24GHz FMCW radar human-presence sensing\u003c\/li\u003e\n\u003cli\u003eDetects moving and relatively stationary people\u003c\/li\u003e\n\u003cli\u003eSeparate moving and stationary target reporting\u003c\/li\u003e\n\u003cli\u003eApproximate target distance and signal energy data\u003c\/li\u003e\n\u003cli\u003eAdjustable detection range up to approximately 6m\u003c\/li\u003e\n\u003cli\u003eBluetooth monitoring and parameter configuration\u003c\/li\u003e\n\u003cli\u003eIndependent moving and stationary sensitivity adjustment across distance gates\u003c\/li\u003e\n\u003cli\u003eConfigurable maximum detection range and absence delay\u003c\/li\u003e\n\u003cli\u003eActive-high digital presence output\u003c\/li\u003e\n\u003cli\u003eLD2410-compatible UART communication\u003c\/li\u003e\n\u003cli\u003eCompatible with established Arduino and ESPHome integrations\u003c\/li\u003e\n\u003cli\u003e5V supply with 3.3V signal levels\u003c\/li\u003e\n\u003cli\u003eSlim 35 × 7mm PCB\u003c\/li\u003e\n\u003cli\u003e1.27mm pin spacing\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAvailable with a pre-soldered header or as a headerless module\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor type\u003c\/td\u003e\n\u003ctd\u003e24GHz FMCW radar presence sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection\u003c\/td\u003e\n\u003ctd\u003eMoving and relatively stationary people\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection range\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.75m to 6m, adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection angle\u003c\/td\u003e\n\u003ctd\u003eApproximately ±60°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage operating current\u003c\/td\u003e\n\u003ctd\u003eApproximately 79mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterfaces\u003c\/td\u003e\n\u003ctd\u003eUART and digital presence output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUART baud rate\u003c\/td\u003e\n\u003ctd\u003e256000 baud by default\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogic level\u003c\/td\u003e\n\u003ctd\u003e3.3V-compatible UART and digital output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eMonitoring and configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin spacing\u003c\/td\u003e\n\u003ctd\u003e1.27mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eApproximately 35 × 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader options\u003c\/td\u003e\n\u003ctd\u003eHeaderless or pre-soldered 1.27mm header\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol compatibility\u003c\/td\u003e\n\u003ctd\u003eLD2410-compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/ncmreynolds\/ld2410\" rel=\"noopener\" title=\"LD2410 Arduino library by Nick Reynolds\" target=\"_blank\"\u003eLD2410 Arduino library by Nick Reynolds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/esphome.io\/components\/sensor\/ld2410\/\" rel=\"noopener\" title=\"ESPHome LD2410 Sensor\" target=\"_blank\"\u003eLD2410 Sensor in ESPHome\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePinout\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eNote: Pin 1 is the pin with the small component next to it (when viewing from the top).\u003c\/em\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 8px;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"width: 72.8281px;\"\u003e\u003cstrong\u003eOUT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 602.766px;\"\u003eDigital target-status output. HIGH indicates that presence has been detected; LOW indicates that the monitored area is clear.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 8px;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"width: 72.8281px;\"\u003e\u003cstrong\u003eTX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 602.766px;\"\u003eUART data output from the radar module.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 8px;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"width: 72.8281px;\"\u003e\u003cstrong\u003eRX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 602.766px;\"\u003eUART data input to the radar module.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 8px;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"width: 72.8281px;\"\u003e\u003cstrong\u003eGND\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 602.766px;\"\u003eGround connection.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 8px;\"\u003e5\u003c\/td\u003e\n\u003ctd style=\"width: 72.8281px;\"\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 602.766px;\"\u003e5V power input.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x LD2410B-P 24GHz Human Presence Sensor\n\u003cul\u003e\n\u003cli\u003eAvailable with or without 1.27mm headers - select an option before adding to your cart\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Pi Hut","offers":[{"title":"No headers","offer_id":56223855444353,"sku":"106689","price":6.0,"currency_code":"GBP","in_stock":false},{"title":"Pre-soldered headers","offer_id":56223855477121,"sku":"106690","price":6.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/ld2410b-p-24ghz-human-presence-sensor-the-pi-hut-1257113775.jpg?v=1788540310","url":"https:\/\/thepihut.com\/products\/ld2410b-p-24ghz-human-presence-sensor","provider":"The Pi Hut","version":"1.0","type":"link"}