{"id":8858,"date":"2026-08-27T10:20:00","date_gmt":"2026-08-27T08:20:00","guid":{"rendered":"https:\/\/www.lukaswojcik.com\/blog\/?p=8858"},"modified":"2026-10-05T11:02:26","modified_gmt":"2026-10-05T09:02:26","slug":"presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation","status":"publish","type":"post","link":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/","title":{"rendered":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation"},"content":{"rendered":"\r\n<h2 class=\"wp-block-heading\">Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Traditional lighting automations in residential and commercial environments often suffer from reliability issues caused by Passive Infrared (PIR) sensor limitations. Because PIR modules detect rapid changes in infrared radiation across spatial zones, static occupants experiencing minimal physical displacement\u2014such as individuals reading or working at a desk\u2014frequently trigger false-negative occupancy states, causing lights to switch off unexpectedly. Implementing 24 GHz millimeter-wave (mmWave) radars like the Hi-Link LD2410 and LD2450 eliminates these &#8220;dead zones&#8221; by measuring micro-motions and respiration patterns via Doppler frequency shifts and Frequency Modulated Continuous Wave (FMCW) radar principles.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">1. The Architectural Limitations of PIR Sensors<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">PIR sensors operate by focusing ambient infrared energy onto a pyroelectric sensor using a faceted Fresnel lens. This passive detection mechanism presents inherent mechanical and thermal disadvantages:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Thermal Blindness:<\/strong> During warmer seasons when ambient room temperatures approach human body heat (~36\u201337\u00b0C), the differential infrared signature drops, drastically reducing PIR detection range and accuracy.<\/li>\r\n\r\n\r\n\r\n<li><strong>Motion Dependency:<\/strong> A PIR sensor requires crossing multiple Fresnel optical zones to generate a voltage differential; stationary presence without macroscopic limb movement goes entirely undetected after the initial cooldown timer expires.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<figure class=\"lw-diagram\">\n<img decoding=\"async\" src=\"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/diagrams\/dia-8858-mmwave-praesenz-en.png?v=20261005\" width=\"1120\" height=\"580\" loading=\"lazy\" alt=\"Three columns: PIR limitations (thermal blindness near 36\u201337\u00b0C, motion dependency, false negatives), the mmWave radars LD2410 with distance gates up to 6 m and LD2450 with X\/Y tracking of up to three targets, and a hybrid ESPHome node where PIR OR radar drives the light.\">\n<figcaption>Why PIR sensors lose still occupants, how the LD2410 and LD2450 mmWave radars detect them, and how a hybrid PIR plus radar node keeps the light on.<\/figcaption>\n<\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">2. The mmWave Advantage: Micro-Motion and Coordinate Tracking<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Millimeter-wave radar modules actively transmit high-frequency electromagnetic waves and evaluate the phase and frequency shifts of the reflected signals. This active FMCW approach allows detecting sub-millimeter displacements:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Hi-Link LD2410 (Range-Gated Micro-Motion):<\/strong> Splits the detection cone into distinct distance gates (up to 6 meters), allowing independent sensitivity tuning for macroscopic movement and microscopic chest expansion caused by breathing.<\/li>\r\n\r\n\r\n\r\n<li><strong>Hi-Link LD2450 (Multi-Target Coordinate Tracking):<\/strong> Employs multi-antenna arrays to calculate exact X and Y spatial coordinates for up to three simultaneous targets, enabling precise zone-based lighting control within open-plan rooms.<\/li>\r\n<\/ul>\r\n\r\n\r\n<figure style=\"--cbb-digits:2\" class=\"cbb cbb--wrap cbb--numbers wp-block-code-beautifier-block-code\" data-lang=\"yaml\"><figcaption class=\"cbb-head\"><span class=\"cbb-lang\">YAML<\/span><span class=\"cbb-actions\"><button type=\"button\" class=\"cbb-button cbb-button--wrap\" data-cbb-action=\"wrap\" aria-pressed=\"true\" title=\"Wrap long lines\"><svg aria-hidden=\"true\" focusable=\"false\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\"><path d=\"M2 4h12M2 8h9.5a2.5 2.5 0 0 1 0 5H8m0 0 1.5-1.5M8 13l1.5 1.5M2 12h3\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/><\/svg><span class=\"cbb-sr\">Wrap long lines<\/span><\/button><button type=\"button\" class=\"cbb-button cbb-button--copy\" data-cbb-action=\"copy\" data-cbb-done=\"Copied\" data-cbb-failed=\"Press Ctrl+C to copy\"><svg aria-hidden=\"true\" focusable=\"false\" width=\"16\" height=\"16\" viewBox=\"0 0 16 16\"><rect x=\"5.5\" y=\"5.5\" width=\"8\" height=\"8.5\" rx=\"1.5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\"\/><path d=\"M10.5 3.5V3A1.5 1.5 0 0 0 9 1.5H4A1.5 1.5 0 0 0 2.5 3v6.5A1.5 1.5 0 0 0 4 11h.5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\"\/><\/svg><span class=\"cbb-button-label\" aria-live=\"polite\">Copy<\/span><\/button><\/span><\/figcaption><pre class=\"cbb-pre\" tabindex=\"0\"><code class=\"cbb-code language-yaml\" style=\"counter-reset:cbb-line 0;\"><span class=\"cbb-line\"><span class=\"cbb-comment\"># Example: ESPHome configuration combining PIR (instant trigger) and LD2410 (presence hold)<\/span>\n<\/span><span class=\"cbb-line\"><span class=\"cbb-attr\">binary_sensor<\/span>:\n<\/span><span class=\"cbb-line\">  <span class=\"cbb-operator\">-<\/span> <span class=\"cbb-attr\">platform<\/span>: gpio\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">pin<\/span>: GPIO14\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">name<\/span>: <span class=\"cbb-string\">\"Room PIR Instant Motion\"<\/span>\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">id<\/span>: pir_motion\n<\/span><span class=\"cbb-line\">\n<\/span><span class=\"cbb-line\">  <span class=\"cbb-operator\">-<\/span> <span class=\"cbb-attr\">platform<\/span>: template\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">name<\/span>: <span class=\"cbb-string\">\"Room Unified Occupancy\"<\/span>\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">lambda<\/span>: <span class=\"cbb-meta\">|-<\/span>\n<\/span><span class=\"cbb-line\">      return id(pir_motion).state || id(ld2410_has_target).state;\n<\/span><span class=\"cbb-line\">    <span class=\"cbb-attr\">device_class<\/span>: occupancy<\/span><\/code><\/pre><\/figure>\r\n\r\n\r\n<h2 class=\"wp-block-heading\">3. Designing Zero-Dead-Zone Lighting Automations<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">While mmWave radars provide exceptional stationary presence detection, their signal processing algorithms can introduce a slight trigger latency (approx. 200\u2013500 ms) upon initial room entry. Designing an enterprise-grade presence detection node requires a hybrid sensor architecture: pairing a fast PIR sensor for zero-latency initial light triggering with an LD2410\/LD2450 mmWave module to hold the occupancy state indefinitely while micro-motions or respiration persist.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Summary<\/h2>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Upgrading from legacy PIR sensors to 24 GHz mmWave radar modules like the LD2410 and LD2450 fundamentally resolves stationary lighting failures. By leveraging FMCW micro-motion detection and multi-target coordinate tracking, modern smart home infrastructures achieve absolute presence awareness without frustrating dead zones.<\/p>\r\n\n\n<div class=\"lw-faq\">\n<h2>Questions and answers<\/h2>\n\n<h3>With PIR and radar combined by a logical OR, what turns the light off if the radar keeps reporting presence for a moving curtain?<\/h3>\n<p>Nothing inside the sensor, and that is the correct division of labor: the combined sensor answers \u201cis someone here\u201d, and the decision to switch off belongs to the automation on top of it, with its own delay. Putting a timeout inside the presence sensor produces the PIR behavior the radar was installed to replace.<\/p>\n<p>That moves the curtain problem to where it belongs: sensitivity. The LD2410 sets sensitivity per distance gate, so the gate covering the window can be desensitized without touching the rest of the room. That is a short exercise, and it is the difference between a sensor that works and one that gets unplugged.<\/p>\n<p>Two placement notes belong in the same category, because they cause the same symptom. The detection cone does not stop at a plasterboard wall, so a radar aimed at a partition reports the neighboring room quite accurately. And a ceiling fan, or an air stream that keeps plants or fabric moving, produces steady micro-movement that the radar reads as breathing. Both look like a broken sensor and are a correct measurement of something nobody wanted measured.<\/p>\n<\/div>\n\n<div class=\"lw-quellen\">\n<h2>Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.home-assistant.io\/docs\/\" target=\"_blank\" rel=\"noopener noreferrer\">Home Assistant documentation<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Technical analysis of presence detection using 24 GHz mmWave radars (LD2410\/LD2450): eliminating PIR dead zones via micro-motion and breathing detection.<\/p>\n","protected":false},"author":1,"featured_media":18852,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[91365,91374,91626],"class_list":["post-8858","post","type-post","status-publish","format-standard","hentry","category-smart-home","tag-home-assistant","tag-iot","tag-smart-home-de"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation | Lukas Wojcik<\/title>\n<meta name=\"description\" content=\"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation | Lukas Wojcik\" \/>\n<meta property=\"og:description\" content=\"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/\" \/>\n<meta property=\"og:site_name\" content=\"Lukas Wojcik - Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-27T08:20:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-05T09:02:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Lukas Wojcik\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lukas Wojcik\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/\"},\"author\":{\"name\":\"Lukas Wojcik\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#\\\/schema\\\/person\\\/895f7604f9b6b71aad9bba33af28d0f9\"},\"headline\":\"Presence Detection 2.0: mmWave Radars (LD2410\\\/LD2450) in Lighting Automation\",\"datePublished\":\"2026-08-27T08:20:00+00:00\",\"dateModified\":\"2026-10-05T09:02:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/\"},\"wordCount\":641,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#\\\/schema\\\/person\\\/895f7604f9b6b71aad9bba33af28d0f9\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/hero-8858-presence-detection-2-0-mmwave-radars-k.png\",\"keywords\":[\"Home Assistant\",\"IoT\",\"Smart Home\"],\"articleSection\":[\"Smart Home\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/\",\"url\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/\",\"name\":\"Presence Detection 2.0: mmWave Radars (LD2410\\\/LD2450) in Lighting Automation | Lukas Wojcik\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/hero-8858-presence-detection-2-0-mmwave-radars-k.png\",\"datePublished\":\"2026-08-27T08:20:00+00:00\",\"dateModified\":\"2026-10-05T09:02:26+00:00\",\"description\":\"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/hero-8858-presence-detection-2-0-mmwave-radars-k.png\",\"contentUrl\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/hero-8858-presence-detection-2-0-mmwave-radars-k.png\",\"width\":1200,\"height\":630,\"caption\":\"Presence Detection 2.0: mmWave Radars (LD2410\\\/LD2450) in Lighting Automation\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/en\\\/smart-home\\\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Presence Detection 2.0: mmWave Radars (LD2410\\\/LD2450) in Lighting Automation\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/\",\"name\":\"Lukas Wojcik - Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#\\\/schema\\\/person\\\/895f7604f9b6b71aad9bba33af28d0f9\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/#\\\/schema\\\/person\\\/895f7604f9b6b71aad9bba33af28d0f9\",\"name\":\"Lukas Wojcik\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/lw-x2.jpg\",\"url\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/lw-x2.jpg\",\"contentUrl\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/lw-x2.jpg\",\"width\":424,\"height\":636,\"caption\":\"Lukas Wojcik\"},\"logo\":{\"@id\":\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/lw-x2.jpg\"},\"sameAs\":[\"https:\\\/\\\/www.lukaswojcik.com\\\/blog\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation | Lukas Wojcik","description":"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/","og_locale":"en_US","og_type":"article","og_title":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation | Lukas Wojcik","og_description":"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.","og_url":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/","og_site_name":"Lukas Wojcik - Blog","article_published_time":"2026-08-27T08:20:00+00:00","article_modified_time":"2026-10-05T09:02:26+00:00","og_image":[{"width":1200,"height":630,"url":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png","type":"image\/png"}],"author":"Lukas Wojcik","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Lukas Wojcik","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#article","isPartOf":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/"},"author":{"name":"Lukas Wojcik","@id":"https:\/\/www.lukaswojcik.com\/blog\/#\/schema\/person\/895f7604f9b6b71aad9bba33af28d0f9"},"headline":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation","datePublished":"2026-08-27T08:20:00+00:00","dateModified":"2026-10-05T09:02:26+00:00","mainEntityOfPage":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/"},"wordCount":641,"commentCount":0,"publisher":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/#\/schema\/person\/895f7604f9b6b71aad9bba33af28d0f9"},"image":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png","keywords":["Home Assistant","IoT","Smart Home"],"articleSection":["Smart Home"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/","url":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/","name":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation | Lukas Wojcik","isPartOf":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#primaryimage"},"image":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png","datePublished":"2026-08-27T08:20:00+00:00","dateModified":"2026-10-05T09:02:26+00:00","description":"mmWave presence sensors for lighting: LD2410 and LD2450, differences from PIR and evaluation of motion and coordinates.","breadcrumb":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#primaryimage","url":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png","contentUrl":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/09\/hero-8858-presence-detection-2-0-mmwave-radars-k.png","width":1200,"height":630,"caption":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation"},{"@type":"BreadcrumbList","@id":"https:\/\/www.lukaswojcik.com\/blog\/en\/smart-home\/presence-detection-2-0-mmwave-radars-ld2410-ld2450-in-lighting-automation\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.lukaswojcik.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Presence Detection 2.0: mmWave Radars (LD2410\/LD2450) in Lighting Automation"}]},{"@type":"WebSite","@id":"https:\/\/www.lukaswojcik.com\/blog\/#website","url":"https:\/\/www.lukaswojcik.com\/blog\/","name":"Lukas Wojcik - Blog","description":"","publisher":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/#\/schema\/person\/895f7604f9b6b71aad9bba33af28d0f9"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.lukaswojcik.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/www.lukaswojcik.com\/blog\/#\/schema\/person\/895f7604f9b6b71aad9bba33af28d0f9","name":"Lukas Wojcik","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/07\/lw-x2.jpg","url":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/07\/lw-x2.jpg","contentUrl":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/07\/lw-x2.jpg","width":424,"height":636,"caption":"Lukas Wojcik"},"logo":{"@id":"https:\/\/www.lukaswojcik.com\/blog\/wp-content\/uploads\/2026\/07\/lw-x2.jpg"},"sameAs":["https:\/\/www.lukaswojcik.com\/blog"]}]}},"_links":{"self":[{"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/posts\/8858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/comments?post=8858"}],"version-history":[{"count":4,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/posts\/8858\/revisions"}],"predecessor-version":[{"id":18138,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/posts\/8858\/revisions\/18138"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/media\/18852"}],"wp:attachment":[{"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/media?parent=8858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/categories?post=8858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lukaswojcik.com\/blog\/wp-json\/wp\/v2\/tags?post=8858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}