{"product_id":"original-hlk-ld2410b-p-human-presence-radar-sensor-module-heartbeat-detection-bluetooth","title":"HLK‑LD2410B‑P Human Presence Radar Sensor Module – Heartbeat Detection \u0026 Bluetooth","description":"\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"product-description\"\u003eProduct Description\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eThe Original HLK‑LD2410B‑P is a 24 GHz millimeter‑wave radar sensor module engineered for accurate human presence detection, including micro‑motions such as breathing or slight body movement. Using FMCW radar technology, it can detect both moving and stationary people within an indoor range of up to about 5 m, with a typical distance resolution of 0.75 m and a wide ±60° field of view.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eUnlike traditional PIR sensors, the LD2410B‑P can maintain “presence” detection even when a person is sitting, lying down, or otherwise nearly still, making it ideal for modern smart‑home and office applications. The module provides a simple presence output pin plus a high‑speed UART interface for detailed zone data and is equipped with Bluetooth so you can configure detection range, sensitivity, and delay parameters wirelessly via a mobile app.\u003c\/p\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\" id=\"ideal-uses\"\u003eIdeal Uses\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eSmart lighting and HVAC control\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– keep lights, air conditioning, or fans on only while people are present, even if they are sitting still.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eSecurity and intrusion detection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– detect human presence and micro‑motion for alarms or monitoring, less affected by temperature and light changes than PIR sensors.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/www.youtube.com\/watch?v=oJZS8c9oyjg\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eOccupancy‑aware appliances\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– automatically power down TVs, monitors, or other devices when no one is in the room.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\u003cstrong\u003eHealth and safety applications\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– prevent hazardous equipment (e.g., UV lamps, lasers) from operating when people are present; detect presence near dangerous zones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003eCompatibility\u003c\/h2\u003e\nOutputs a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edigital presence signal\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(OUT pin) that can be read by Arduino, ESP32, and other microcontrollers as a simple HIGH\/LOW indication.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eProvides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUART\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(TX\/RX) interface at a default baud rate of 256000 for detailed detection data and configuration via serial tools.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eIncludes\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBluetooth\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupport to configure detection distance, zone sensitivity, and delay via Android\/iOS apps without a wired connection.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eTypically powered from\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 V\u003c\/strong\u003e, drawing around a couple of hundred milliamps; suitable for integration in smart‑home and IoT devices (ensure adequate 5 V supply).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003eKey Features\u003c\/h2\u003e\n\u003cstrong\u003e24 GHz millimeter‑wave radar\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor human presence and micro‑motion detection.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cul\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eDetection range\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eup to about\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 m\u003c\/strong\u003e, with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.75 m distance resolution\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand ±60° detection angle.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eMicro‑motion \/ “heartbeat” detection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– can detect very small human motions such as breathing or slight posture changes.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/www.youtube.com\/watch?v=oJZS8c9oyjg\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eConfigurable detection gates\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand sensitivity per distance zone for fine‑tuned coverage.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eDigital output (OUT)\u003c\/strong\u003e: high when presence is detected, low when no human is present.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eUART interface\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor advanced data output and parameter tuning, default baud 256000.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cstrong\u003eBluetooth configuration\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor wireless setup using vendor apps (Android\/iOS).\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eStrong\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eenvironmental adaptability\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– largely unaffected by temperature, lighting, and humidity compared to PIR and ultrasonic sensors.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eCompact form factor (around 7 × 35 mm for the radar core module) suitable for ceiling or wall‑mount integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specs (Typical, HLK‑LD2410B‑P)\u003c\/h2\u003e\nExact values may vary slightly; consult your specific datasheet:\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eRadar Type:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e24 GHz FMCW millimeter‑wave\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehuman presence radar.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eDetection Range: up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 m\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eindoors, with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.75 m\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eresolution.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eDetection Angle: approx.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e±60°\u003c\/strong\u003e.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eInterfaces:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eOUT (presence)\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUART_TX\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUART_RX\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eGND\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eVCC\u003c\/strong\u003e.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eSupply Voltage:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5 V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einput; recommended supply current ≥ 200 mA.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eCommunication:\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eUART default\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e256000 baud\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eBluetooth for configuration and diagnostics.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003eInstallation: supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eceiling or wall mounting\u003c\/strong\u003e; best performance when antenna faces open monitored area.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e\n\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003eWhat’s Included\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003e1 × Original HLK‑LD2410B‑P Human Presence Radar Sensor Module (with integrated Bluetooth and UART).\u003c\/p\u003e\n\u003ch2 class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eSafety Note\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:align-top\"\u003eThis radar module is intended for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eindoor human presence detection\u003c\/strong\u003e; avoid installing in locations with continuous non‑human motion (e.g., rotating fans, large moving machinery) to reduce false detections.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cdiv class=\"has-inline-images my-2 first:mt-0 [\u0026amp;:has([data-inline-type=image])+\u0026amp;:has([data-inline-type=image])_[data-inline-type=image]]:hidden [\u0026amp;:has(table)_[data-inline-type=image]]:hidden [\u0026amp;_h1:first-of-type]:mt-8 [\u0026amp;_h2:first-of-type]:mt-6\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"prose dark:prose-invert inline leading-relaxed break-words min-w-0 [word-break:break-word] [\u0026amp;_\u0026gt;*:first-child]:mt-0 [\u0026amp;_\u0026gt;*:last-child]:mb-0\"\u003e\n\u003cp\u003eEnsure the antenna has a clear line of sight to the monitored area; metal enclosures or dense obstacles can attenuate or reflect the radar signal.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"inline-flex\"\u003e\u003ca rel=\"noopener\" class=\"inline-flex max-w-full min-w-0\" href=\"https:\/\/openelab.io\/blogs\/learn\/what-is-hlk-ld2410b-and-how-to-use-it\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003eWhen integrating with mains‑powered loads (lights, appliances), always route the radar’s low‑voltage outputs through appropriate isolation and driver circuits (relays, optocouplers, or solid‑state relays) and comply with local electrical safety codes.\u003cspan class=\"citation-nbsp\"\u003e\u003c\/span\u003e\u003cspan class=\"citation inline\"\u003e\u003cspan class=\"group\/trigger inline-flex min-w-0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"sugar","offers":[{"title":"Default Title","offer_id":44922562576519,"sku":null,"price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/7763\/5719\/files\/HLK_LD2410B_PHumanPresenceRadarSensorModuletop.png?v=1781873836","url":"https:\/\/sugarstore.dev\/products\/original-hlk-ld2410b-p-human-presence-radar-sensor-module-heartbeat-detection-bluetooth","provider":"sugar","version":"1.0","type":"link"}