{"id":3407,"date":"2026-02-22T13:30:00","date_gmt":"2026-02-22T13:30:00","guid":{"rendered":"https:\/\/pirhome.com\/?p=3407"},"modified":"2026-02-22T13:30:00","modified_gmt":"2026-02-22T13:30:00","slug":"pir-curtains-blinds-false-triggers","status":"publish","type":"post","link":"http:\/\/www.pirhome.com\/?p=3407","title":{"rendered":"PIR Sensor Triggering on Moving Curtains or Blinds"},"content":{"rendered":"<h2>Introduction<\/h2>\n<p>Moving curtains or blinds near a window can cause PIR sensors to false-trigger. The moving fabric creates changing IR patterns that mimic human motion.<\/p>\n<h2>Why It Happens<\/h2>\n<p>Curtains move in the wind from an open window or HVAC vent. As they move, they:<\/p>\n<ul>\n<li>Block and unblock IR from outside.<\/li>\n<li>Create moving shadows.<\/li>\n<li>May have temperature differences if near a radiator or window.<\/li>\n<\/ul>\n<h2>Symptoms<\/h2>\n<ul>\n<li>False triggers when windows are open or wind is blowing.<\/li>\n<li>Triggers correlated with curtain movement.<\/li>\n<\/ul>\n<h2>Solutions<\/h2>\n<h3>1. Reposition Sensor<\/h3>\n<p>Move the sensor so it doesn&#8217;t &#8220;see&#8221; the curtains. Aim away from windows.<\/p>\n<h3>2. Secure Curtains<\/h3>\n<p>Use curtain weights or tiebacks to prevent movement.<\/p>\n<h3>3. Close Windows or Use Draft Stoppers<\/h3>\n<p>Reduce airflow that moves curtains.<\/p>\n<h3>4. Use a Different Lens<\/h3>\n<p>A curtain lens (long-range narrow) may help if the problem is at a specific area.<\/p>\n<h3>5. Adjust Sensitivity<\/h3>\n<p>Lower sensitivity may make the sensor ignore the smaller signals from curtains.<\/p>\n<h3>6. Use a Pet-Immune Sensor<\/h3>\n<p>Pet-immune sensors are designed to ignore small movements; they may help with curtains.<\/p>\n<h2>Conclusion<\/h2>\n<p>Curtain movement is a common but solvable problem. Repositioning the sensor is usually the easiest fix.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Moving curtains or blinds near a window can cause PIR sensors to false-trigger. The moving fabric creates changing IR patterns that mimic human motion. Why It Happens Curtains move in the wind from an open window or HVAC vent. As they move, they: Block and unblock IR from outside. Create moving shadows. May have [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-3407","post","type-post","status-publish","format-standard","hentry","category-troubleshooting"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>PIR Sensor Triggering on Moving Curtains or Blinds - PIRHOME<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"http:\/\/www.pirhome.com\/?p=3407\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"PIR Sensor Triggering on Moving Curtains or Blinds - PIRHOME\" \/>\r\n<meta property=\"og:description\" content=\"Introduction Moving curtains or blinds near a window can cause PIR sensors to false-trigger. The moving fabric creates changing IR patterns that mimic human motion. Why It Happens Curtains move in the wind from an open window or HVAC vent. As they move, they: Block and unblock IR from outside. Create moving shadows. May have [&hellip;]\" \/>\r\n<meta property=\"og:url\" content=\"http:\/\/www.pirhome.com\/?p=3407\" \/>\r\n<meta property=\"og:site_name\" content=\"PIRHOME\" \/>\r\n<meta property=\"article:published_time\" content=\"2026-02-22T13:30:00+00:00\" \/>\r\n<meta name=\"author\" content=\"nic@nicsky.com\" \/>\r\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\r\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"nic@nicsky.com\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\r\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407#article\",\"isPartOf\":{\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407\"},\"author\":{\"name\":\"nic@nicsky.com\",\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/#\\\/schema\\\/person\\\/41049b5236f9c77c9314997d070db3e3\"},\"headline\":\"PIR Sensor Triggering on Moving Curtains or Blinds\",\"datePublished\":\"2026-02-22T13:30:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407\"},\"wordCount\":191,\"commentCount\":0,\"publisher\":{\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/#organization\"},\"articleSection\":[\"Troubleshooting\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"http:\\\/\\\/www.pirhome.com\\\/?p=3407#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407\",\"url\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407\",\"name\":\"PIR Sensor Triggering on Moving Curtains or Blinds - PIRHOME\",\"isPartOf\":{\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/#website\"},\"datePublished\":\"2026-02-22T13:30:00+00:00\",\"breadcrumb\":{\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\\\/\\\/www.pirhome.com\\\/?p=3407\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/?p=3407#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"http:\\\/\\\/www.pirhome.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"PIR Sensor Triggering on Moving Curtains or Blinds\"}]},{\"@type\":\"WebSite\",\"@id\":\"http:\\\/\\\/www.pirhome.com\\\/#website\",\"url\":\"http:\\\/\\\/www.pirhome.com\\\/\",\"name\":\"PIRHOME\",\"description\":\"PIR &amp; 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