{"id":7873,"date":"2025-04-01T03:33:00","date_gmt":"2025-04-01T01:33:00","guid":{"rendered":"https:\/\/www.ass-security.fr\/blog\/?p=7873"},"modified":"2025-03-29T23:55:18","modified_gmt":"2025-03-29T22:55:18","slug":"declenchement-intempestif-sur-alarme-ajax-motioncam-cela-fait-froid-dans-le-dos-aprilfoolsday","status":"publish","type":"post","link":"https:\/\/www.ass-security.fr\/blog\/declenchement-intempestif-sur-alarme-ajax-motioncam-cela-fait-froid-dans-le-dos-aprilfoolsday\/","title":{"rendered":"Insolite : D\u00e9clenchement intempestif sur l\u2019alarme AJAX | Nous n\u2019\u00e9tions vraiment pas pr\u00eats et cela fait froid dans le dos !"},"content":{"rendered":"\n<p><strong>Le syst\u00e8me d\u2019alarme Ajax et ses p\u00e9riph\u00e9riques de d\u00e9tection<\/strong> sont r\u00e9put\u00e9s pour une certaine qualit\u00e9 associ\u00e9e \u00e0 une fiabilit\u00e9 en mati\u00e8re de d\u00e9tection. Ainsi, les faux positifs sont rares, et <strong>99,9 % des d\u00e9clenchements ont une explication parfaitement rationnelle<\/strong>, souvent \u00e9lucid\u00e9e apr\u00e8s un simple \u00e9change t\u00e9l\u00e9phonique avec le client ou une visite sur place pour constater le probl\u00e8me. D\u2019ailleurs, lorsqu\u2019un d\u00e9clenchement reste inexpliqu\u00e9, je n\u2019h\u00e9site pas \u00e0 installer une cam\u00e9ra temporaire en observation afin d\u2019analyser la situation et trouver une solution adapt\u00e9e. Les causes les plus fr\u00e9quentes ? <strong>Une ouverture de porte automatique<\/strong>, des courants d\u2019air agitant les supports PLV ou encore une climatisation se d\u00e9clenchant en pleine nuit. Les facteurs de d\u00e9clenchement ne manquent pas d\u2019audace pour aiguiser tous nos sens <strong>en tant qu\u2019installateurs d\u2019alarme\u2026<\/strong> <\/p>\n\n\n\n<div class=\"wp-block-foxiz-elements-note gb-wrap note-wrap none-padding yes-shadow\" style=\"--heading-border-color:#88888822;--border-width:0 0 0 0;--desktop-header-padding:15px 30px 15px 30px;--tablet-header-padding:15px 25px 15px 25px;--mobile-header-padding:15px 20px 15px 20px;--desktop-padding:15px 30px 30px 30px;--tablet-padding:15px 25px 25px 25px;--mobile-padding:15px 20px 20px 20px\"><div class=\"note-header gb-header\"><span class=\"note-heading\"><span class=\"gb-heading heading-icon\"><i class=\"rbi rbi-idea\"><\/i><\/span><h4 class=\"gb-heading none-toc\">Note<\/h4><\/span><\/div><div class=\"note-content gb-content\">\n<p><strong><a href=\"https:\/\/www.ass-security.fr\/blog\/test-avis-alarme-radio-ajax-hub-en-50131\/\" target=\"_blank\" rel=\"noreferrer noopener\">Test : Ajax Hub, Hub 2, Hub 2 Plus | Une alarme sans fil certifi\u00e9e EN 50131, particuli\u00e8rement aboutie et performante\u2026<\/a><\/strong><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Insolite : D\u00e9clenchement intempestif sur l\u2019alarme AJAX | Un MotionCam en intrusion exclusivement \u00e0 3h33 du matin\u2026 <\/h2>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69f7de61e572f&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69f7de61e572f\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1800\" height=\"1332\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" data-src=\"https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme.jpg\" alt=\"\" class=\"wp-image-7886 lazyload\" data-srcset=\"https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme.jpg 1800w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme-500x370.jpg 500w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme-1024x758.jpg 1024w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme-768x568.jpg 768w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme-1536x1137.jpg 1536w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/paranormal-ajax-alarme-860x636.jpg 860w\" data-sizes=\"auto, (max-width: 1800px) 100vw, 1800px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1800px; --smush-placeholder-aspect-ratio: 1800\/1332;\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Agrandir\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Les 3 captures d&rsquo;\u00e9cran ne laissent planer aucun doute sur une pr\u00e9sence non justifi\u00e9e, g\u00e9n\u00e9rant un d\u00e9clenchement intempestif ainsi qu&rsquo;une perte brutale et soudaine de la temp\u00e9rature de la pi\u00e8ce, chutant \u00e0 1,1\u00b0&#8230; Notons que les 3 clich\u00e9s \u00e9tant sans \u00e9quivoque, repr\u00e9sentant une silhouette vaporeuse, indiscernable, n&rsquo;\u00e9tant pas sans rappeler l&rsquo;ambiance lourde et pesante du mythique Silent Hill, sorti en 1999 sur Playstation 1.<\/figcaption><\/figure>\n\n\n\n<p><strong>Il existe des ph\u00e9nom\u00e8nes que la raison peine \u00e0 expliquer<\/strong>. Parmi eux, l\u2019\u00e9trange comportement d\u2019un d\u00e9tecteur volum\u00e9trique<strong> Ajax MotionCam<\/strong> qui, sans raison apparente, se d\u00e9clenchait \u00e0 la m\u00eame heure chaque nuit : pr\u00e9cis\u00e9ment \u00e0 3h33. Un horaire symbolique, loin d\u2019\u00eatre anodin pour les amateurs d\u2019\u00e9sot\u00e9risme et d\u2019occultisme\u2026 Malgr\u00e9 plusieurs v\u00e9rifications et le remplacement du d\u00e9tecteur incrimin\u00e9 par mes soins, le <strong>ph\u00e9nom\u00e8ne a continu\u00e9 de persister<\/strong> \u00e0 mon grand \u00e9tonnement&#8230; Mes recherches m\u2019ont tr\u00e8s rapidement men\u00e9 \u00e0 de nombreux t\u00e9moignages paranormaux \u00e9voquant des manifestations spectrales ou des activit\u00e9s inexpliqu\u00e9es survenant \u00e0 cette heure pr\u00e9cise\u2026 Malgr\u00e9 sa r\u00e9activit\u00e9, le d\u00e9tecteur de mouvement <strong>MotionCam Ajax<\/strong> ne fournissait aucune photo exploitable, jusqu\u2019\u00e0 cette nuit du 14 d\u00e9cembre o\u00f9 une ombre furtive apparut sur les enregistrements. <strong>Une silhouette vaporeuse, indiscernable,<\/strong> semblant traverser la pi\u00e8ce au moment exact o\u00f9 le capteur s\u2019activait. Science ou surnaturel ? <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Insolite : D\u00e9clenchement intempestif sur l\u2019alarme AJAX | Une analyse spectrale &amp; thermographique permettant de confirmer les diff\u00e9rents soup\u00e7ons&#8230; <\/h2>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69f7de61e5c48&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69f7de61e5c48\" class=\"wp-block-image size-full wp-lightbox-container\"><img decoding=\"async\" width=\"1919\" height=\"570\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" data-src=\"https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique.jpg\" alt=\"\" class=\"wp-image-7892 lazyload\" data-srcset=\"https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique.jpg 1919w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique-500x149.jpg 500w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique-1024x304.jpg 1024w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique-768x228.jpg 768w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique-1536x456.jpg 1536w, https:\/\/www.ass-security.fr\/blog\/wp-content\/uploads\/2025\/04\/capture-ajax-anomalie-fantome-044-thermique-860x255.jpg 860w\" data-sizes=\"auto, (max-width: 1919px) 100vw, 1919px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1919px; --smush-placeholder-aspect-ratio: 1919\/570;\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Agrandir\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><figcaption class=\"wp-element-caption\">Le clich\u00e9 thermographique \u00e0 gauche, associ\u00e9 au relev\u00e9 spectral, ne laisse aucun doute sur la pr\u00e9sence d&rsquo;une force ext\u00e9rieure. Notons, sur le clich\u00e9 de droite, un niveau de bruit cons\u00e9quent mesur\u00e9 par notre v\u00e9n\u00e9rable radio SDR HackRf One.<\/figcaption><\/figure>\n\n\n\n<p>Face \u00e0 ces \u00e9v\u00e9nements troublants, <strong>plusieurs explications sont envisageables<\/strong>. Certains sp\u00e9cialistes du paranormal \u00e9voqueraient des \u00ab <strong>r\u00e9sidus \u00e9nerg\u00e9tiques<\/strong> \u00bb, tandis que les scientifiques y verraient des <strong>interf\u00e9rences \u00e9lectromagn\u00e9tiques<\/strong> ou des ph\u00e9nom\u00e8nes naturels mal interpr\u00e9t\u00e9s&#8230;. Notons l&rsquo;analyse spectrale \u00e0 l\u2019aide d&rsquo;un HackRf One associ\u00e9 au logiciel SDRConsole ne laisse planer aucun doute sur <strong>l\u2019activit\u00e9 \u00e9nerg\u00e9tique ce soir-l\u00e0<\/strong>, lors de mes investigations effectu\u00e9es pr\u00e9cis\u00e9ment \u00e0 3h33 du matin. Et oui, <strong>\u00e7a travaille plut\u00f4t tard chez ASS Security<\/strong> ! \u2026 Finalement, le duo Lucia et Jason, profond\u00e9ment troubl\u00e9 par cette histoire particuli\u00e8rement inqui\u00e9tante, aura pr\u00e9f\u00e9r\u00e9 d\u00e9sactiver le d\u00e9tecteur et consulter un sp\u00e9cialiste en ph\u00e9nom\u00e8nes paranormaux&#8230; <strong>Depuis, l\u2019alarme ne s\u2019est plus jamais d\u00e9clench\u00e9e \u00e0 3h33\u2026<\/strong> Hasard, illusion ou v\u00e9ritable pr\u00e9sence surnaturelle ? Le myst\u00e8re demeure entier\u2026 <\/p>\n\n\n\n<p><strong>#aprilfoolsday #aprilfool #happyaprilfoolsday #happyaprilfools #aprilfoolsjoke #aprilfoolsbirthday #aprilfoolsday2025<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le syst\u00e8me d\u2019alarme Ajax et ses p\u00e9riph\u00e9riques de d\u00e9tection sont r\u00e9put\u00e9s pour une certaine qualit\u00e9 associ\u00e9e \u00e0 une fiabilit\u00e9 en mati\u00e8re de d\u00e9tection. Ainsi, les faux positifs sont rares, et 99,9 % des d\u00e9clenchements ont une explication parfaitement rationnelle, souvent \u00e9lucid\u00e9e apr\u00e8s un simple \u00e9change t\u00e9l\u00e9phonique avec le client ou une visite sur place pour [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7884,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[168],"tags":[375,6,115,205,507,280,209,216],"class_list":{"0":"post-7873","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-divers","8":"tag-ajax","9":"tag-alarme","10":"tag-alarme-maison","11":"tag-alarme-radio","12":"tag-aprilfoolsday","13":"tag-iot","14":"tag-radio-frequency","15":"tag-sdr"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Insolite : D\u00e9clenchement intempestif MotionCam sur l&#039;alarme AJAX : un ph\u00e9nom\u00e8ne inexpliqu\u00e9 \u00e0 3h33 du matin !<\/title>\n<meta name=\"description\" content=\"Insolite : Un d\u00e9tecteur volum\u00e9trique MotionCam d&#039;alarme AJAX se d\u00e9clenche chaque nuit \u00e0 3h33 sans raison apparente\u2026 Science ou surnaturel ? 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