{"id":1012993,"date":"2023-09-04T18:38:26","date_gmt":"2023-09-04T18:38:26","guid":{"rendered":"https:\/\/beta-new.inhand.com\/?p=6779"},"modified":"2026-06-04T00:44:18","modified_gmt":"2026-06-04T00:44:18","slug":"what-is-dtu","status":"publish","type":"post","link":"https:\/\/www.inhand.com\/fr\/support\/blogs\/what-is-dtu","title":{"rendered":"Qu&#039;est-ce que le DTU et \u00e0 quoi peut-il servir\u00a0?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"1012993\" class=\"elementor elementor-1012993\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f5deb9f e-con-full anli_box e-flex e-con e-parent\" data-id=\"f5deb9f\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6c1a9e e-con-full anli_box_l e-flex e-con e-child\" data-id=\"6c1a9e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34437fe7 elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"34437fe7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qu&#039;est-ce que le DTU et \u00e0 quoi peut-il servir\u00a0?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3775149e e-con-full e-flex e-con e-child\" data-id=\"3775149e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-10a10b91 elementor-widget elementor-widget-heading\" data-id=\"10a10b91\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Blogs<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6bac9b35 e-con-full e-flex e-con e-child\" data-id=\"6bac9b35\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-788fe74d elementor-widget-mobile__width-inherit elementor-widget elementor-widget-heading\" data-id=\"788fe74d\" data-element_type=\"widget\" id=\"maodian1\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Points cl\u00e9s \u00e0 retenir<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-257fbef5 elementor-widget elementor-widget-heading\" data-id=\"257fbef5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">DTU signifie Database Transaction Unit (\u00e9galement appel\u00e9e serveur s\u00e9rie, modem IP ou terminal IoT industriel), et peut servir de passerelle dans certains cas d&#039;utilisation. Contrairement \u00e0 un modem sans fil, ce dernier utilise un tunnel physique pour acc\u00e9der au r\u00e9seau.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-728d08d elementor-widget elementor-widget-text-editor\" data-id=\"728d08d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>DTU signifie Database Transaction Unit (unit\u00e9 de transaction de base de donn\u00e9es), \u00e9galement appel\u00e9e serveur s\u00e9rie, modem IP ou terminal IoT industriel. Elle peut servir de passerelle dans certains cas d&#039;utilisation. Contrairement \u00e0 un modem sans fil, le modem sans fil est un tunnel physique permettant d&#039;acc\u00e9der au r\u00e9seau. D\u00e9pourvu de syst\u00e8me d&#039;exploitation, il n\u00e9cessite une connexion commut\u00e9e PPP depuis un ordinateur. Le DTU, quant \u00e0 lui, combine un PC embarqu\u00e9 et un modem sans fil. Il assure non seulement la fonction de modem, mais aussi la conversion de protocoles de donn\u00e9es et la transmission transparente.<\/p><p>Le DTU peut se connecter directement au syst\u00e8me SCADA industriel. En mode de transmission transparente, le syst\u00e8me SCADA communique via une adresse IP d\u00e9di\u00e9e. Lorsqu&#039;il est utilis\u00e9 comme pont r\u00e9seau Modbus, le DTU n\u00e9cessite une adresse IP statique. Dans ce cas, l&#039;\u00e9change de donn\u00e9es avec le syst\u00e8me SCADA s&#039;effectue via le protocole Modbus. Le DTU prend en charge la conversion intelligente de protocole afin de r\u00e9pondre aux exigences de communication entre diff\u00e9rents protocoles. \u00c0 ce jour, le DTU assure la conversion entre Modbus TCP et Modbus RTU, permettant ainsi aux appareils de terrain de se connecter au syst\u00e8me SCADA. Le DTU prend \u00e9galement en charge l&#039;authentification personnalis\u00e9e via TCP\/UDP, la surveillance des signaux de pr\u00e9sence, l&#039;identification des appareils de terrain et le maintien de la disponibilit\u00e9 de la liaison.<\/p><p>La gamme InDTU est stable, fiable et facile \u00e0 utiliser, offrant une gestion flexible et une transmission de protocoles performante. Compar\u00e9e aux autres produits DTU, InDTU pr\u00e9sente les caract\u00e9ristiques suivantes\u00a0:<\/p><p>Tout d&#039;abord, la s\u00e9rie InDTU a \u00e9t\u00e9 vendue \u00e0 des millions d&#039;exemplaires dans le monde entier et certifi\u00e9e par de nombreux pays. Elle prend en charge tous types de r\u00e9seaux sans fil \u00e0 travers le globe avec un excellent taux de disponibilit\u00e9 et de continuit\u00e9 de service, et sa stabilit\u00e9 est largement reconnue par nos clients. Ensuite, sa conception haute fiabilit\u00e9, notamment gr\u00e2ce \u00e0 un syst\u00e8me de surveillance int\u00e9gr\u00e9 garantissant une haute disponibilit\u00e9, un m\u00e9canisme de d\u00e9tection de liaison multicouche (incluant la pulsation PPP, la d\u00e9tection ICMP, le maintien de connexion TCP et la pulsation au niveau application), une r\u00e9cup\u00e9ration automatique en cas de panne r\u00e9seau et le maintien d&#039;une connexion sans fil permanente, ainsi que la pr\u00e9sence de deux cartes SIM pour une redondance accrue, permettent \u00e0 l&#039;InDTU de rester connect\u00e9 en permanence et d&#039;am\u00e9liorer consid\u00e9rablement sa fiabilit\u00e9.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef13471 elementor-widget elementor-widget-image\" data-id=\"ef13471\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"459\" height=\"214\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-1.jpeg\" class=\"attachment-large size-large wp-image-960049\" alt=\"Dispositif DTU IoT industriel servant de passerelle pour la transmission de donn\u00e9es dans les syst\u00e8mes de surveillance \u00e0 distance\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-1.jpeg 459w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-1-300x140.jpeg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-1-18x8.jpeg 18w\" sizes=\"(max-width: 459px) 100vw, 459px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-abafe10 elementor-widget elementor-widget-text-editor\" data-id=\"abafe10\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>L&#039;intensit\u00e9 du signal r\u00e9seau des op\u00e9rateurs varie d&#039;une r\u00e9gion \u00e0 l&#039;autre. Le DTU \u00e9tant \u00e9quip\u00e9 de deux cartes SIM d&#039;op\u00e9rateurs diff\u00e9rents, la bascule automatique s&#039;active\u00a0: en cas de d\u00e9connexion, l&#039;appareil bascule automatiquement de la carte SIM\u00a01 vers le r\u00e9seau de la carte SIM\u00a02.<\/p><p>Par ailleurs, la s\u00e9rie InDTU propose plusieurs modes de gestion et de configuration. Par exemple, la configuration locale par port s\u00e9rie, la configuration \u00e0 distance via RTool et SMS, ainsi que la plateforme InHand Device Manager pour une gestion centralis\u00e9e \u00e0 distance, facilitent la mise en \u0153uvre des projets clients et la maintenance des \u00e9quipements. De plus, l&#039;InDTU int\u00e8gre un second port s\u00e9rie, permettant ainsi la maintenance \u00e0 distance des terminaux de terrain et simplifiant le d\u00e9pannage \u00e0 distance. Gr\u00e2ce \u00e0 cette conception \u00e0 deux ports s\u00e9rie, l&#039;InDTU fonctionne de mani\u00e8re stable tout en restant en ligne, ce qui optimise son taux de disponibilit\u00e9. Par exemple, dans le secteur de l&#039;\u00e9nergie \u00e9lectrique, le DTU connecte les terminaux du syst\u00e8me de terminaux DA, lui-m\u00eame reli\u00e9 au poste principal du centre de distribution. Si la modification d&#039;un param\u00e8tre de configuration du DTU, comme l&#039;intervalle de temps de transmission, s&#039;effectue sans d\u00e9brancher le port s\u00e9rie, pr\u00e9servant ainsi la disponibilit\u00e9 des terminaux.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b825410 elementor-widget elementor-widget-image\" data-id=\"b825410\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"359\" height=\"325\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-2.jpeg\" class=\"attachment-large size-large wp-image-960048\" alt=\"Dispositif IoT industriel DTU avec ports et antennes pour la transmission de donn\u00e9es en surveillance \u00e0 distance\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-2.jpeg 359w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-2-300x272.jpeg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-2-13x12.jpeg 13w\" sizes=\"(max-width: 359px) 100vw, 359px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9af428a elementor-widget elementor-widget-text-editor\" data-id=\"9af428a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Enfin, InDTU prend en charge le protocole intelligent, ce qui rend le r\u00e9seau plus flexible et lui permet de s&#039;adapter \u00e0 un plus grand nombre d&#039;applications. Par exemple, la conversion de protocole Modbus TCP\/Modbus RTU est prise en charge, assurant ainsi une connexion transparente entre le syst\u00e8me SCADA industriel et les \u00e9quipements industriels sur site. InDTU prend \u00e9galement en charge l&#039;authentification personnalis\u00e9e via TCP\/UDP, la surveillance de l&#039;activit\u00e9, l&#039;identification sur site et garantit la disponibilit\u00e9 des liaisons.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b5e1a41 elementor-widget elementor-widget-image\" data-id=\"b5e1a41\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"494\" height=\"200\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-3.jpeg\" class=\"attachment-large size-large wp-image-960047\" alt=\"Passerelle IoT industrielle DTU connectant des capteurs et transmettant des donn\u00e9es \u00e0 des serveurs cloud\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-3.jpeg 494w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-3-300x121.jpeg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-3-18x7.jpeg 18w\" sizes=\"(max-width: 494px) 100vw, 494px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b88f4ef elementor-widget elementor-widget-text-editor\" data-id=\"b88f4ef\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>InDTU est un produit haut de gamme d\u00e9velopp\u00e9 par InHand depuis des d\u00e9cennies. Ces dix derni\u00e8res ann\u00e9es, des dizaines de milliers de produits ont \u00e9t\u00e9 d\u00e9ploy\u00e9s chaque ann\u00e9e dans le domaine des r\u00e9seaux intelligents, assurant des connexions distantes fiables et s\u00e9curis\u00e9es pour la distribution d&#039;\u00e9nergie et cr\u00e9ant ainsi une valeur ajout\u00e9e significative pour les utilisateurs. Afin de r\u00e9pondre aux besoins de nombreux secteurs n\u00e9cessitant une connectivit\u00e9 r\u00e9seau de base, InHand a lanc\u00e9 la s\u00e9rie InDTU300. Ce terminal de communication IoT se distingue par son faible co\u00fbt, son excellent rapport qualit\u00e9-prix, sa stabilit\u00e9, sa fiabilit\u00e9, sa simplicit\u00e9 d&#039;utilisation et sa facilit\u00e9 d&#039;utilisation. Fonctionnant comme serveur s\u00e9rie, il prend en charge la couverture compl\u00e8te des r\u00e9seaux cellulaires sans fil tels que 2G\/3G\/4G\/eMTC\/Nb-IoT et offre stabilit\u00e9, fiabilit\u00e9, gestion flexible et conversion de protocoles.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-206bd34 elementor-widget elementor-widget-image\" data-id=\"206bd34\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"486\" height=\"352\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-4.jpeg\" class=\"attachment-large size-large wp-image-960046\" alt=\"Un dispositif DTU connect\u00e9 \u00e0 un \u00e9quipement industriel, servant de serveur s\u00e9rie et de passerelle terminal IoT\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-4.jpeg 486w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-4-300x217.jpeg 300w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/03\/DTU-4-18x12.jpeg 18w\" sizes=\"(max-width: 486px) 100vw, 486px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab5869d elementor-widget elementor-widget-text-editor\" data-id=\"ab5869d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La s\u00e9rie InDTU300 se distingue par sa faible consommation d&#039;\u00e9nergie et son large \u00e9ventail d&#039;applications, ce qui la rend id\u00e9ale pour les secteurs de l&#039;eau, des collectivit\u00e9s, de l&#039;environnement, de la m\u00e9t\u00e9orologie, du chauffage et bien d&#039;autres. Ce produit est particuli\u00e8rement adapt\u00e9 aux environnements ext\u00e9rieurs aliment\u00e9s par batterie et sa consommation \u00e9nerg\u00e9tique est nettement inf\u00e9rieure \u00e0 la moyenne du secteur, r\u00e9pondant ainsi aux besoins des industries situ\u00e9es dans des zones recul\u00e9es. Dans les applications o\u00f9 l&#039;acc\u00e8s \u00e0 l&#039;alimentation \u00e9lectrique est difficile et o\u00f9 une alimentation par batterie est indispensable, la faible consommation du DTU permet aux utilisateurs de r\u00e9aliser des \u00e9conomies sur les batteries tout en assurant une plus grande stabilit\u00e9.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1e87d53 e-con-full e-flex e-con e-child\" data-id=\"1e87d53\" data-element_type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a14c13b e-con-full anli_l_st e-flex e-con e-child\" data-id=\"a14c13b\" data-element_type=\"container\" 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elementor-element-108ac635 elementor-widget elementor-widget-shortcode\" data-id=\"108ac635\" data-element_type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">    <style>\n        \/* --- \u8fd9\u91cc\u7684\u53c2\u6570\u5168\u90e8\u4fdd\u7559\u4f60\u7684\u4fee\u6539 --- *\/\n        .vpro-wrapper {\n            width: 100%;\n            max-width: 25rem;\n            height: 38.5rem;\n            overflow-y: auto;\n            overflow-x: hidden;\n            \/* 1. \u589e\u52a0\u5e95\u90e8\u5185\u8fb9\u8ddd\uff0c\u5236\u9020\u865a\u7a7a\u611f *\/\n            padding: 0.3125rem 0.3125rem 0rem 0.3125rem;\n            scrollbar-width: thin;\n            box-sizing: border-box;\n        }\n\n        .vpro-wrapper::-webkit-scrollbar { width: 0.25rem; }\n        .vpro-wrapper::-webkit-scrollbar-thumb { background: #ccc; border-radius: 0.625rem; }\n\n        .vpro-item {\n            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class=\"vpro-wrapper\">\n                    <div class=\"vpro-item\">\n                <div class=\"vpro-img-box\">\n                    <a href=\"https:\/\/www.inhand.com\/fr\/cases\/road-monitoring-sd-wan\">\n                                                    <img loading=\"lazy\" decoding=\"async\" width=\"1360\" height=\"540\" src=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring.png\" class=\"attachment-full size-full wp-post-image\" alt=\"Sites de surveillance routi\u00e8re distribu\u00e9s connect\u00e9s via la solution SD-WAN d&#039;InHand\" srcset=\"https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring.png 1360w, https:\/\/www.inhand.com\/wp-content\/uploads\/2023\/10\/SD-WAN-networking-facilitates-distributed-road-monitoring-300x119.png 300w, 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https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-18x7.jpg 18w, https:\/\/www.inhand.com\/wp-content\/uploads\/2026\/05\/5G-Connectivity-for-RV-Travel-banner-600x222.jpg 600w\" sizes=\"(max-width: 1780px) 100vw, 1780px\" \/>                                            <\/a>\n                <\/div>\n                <div class=\"vpro-content\">\n                    <div class=\"vpro-title\">\n                        <a href=\"https:\/\/www.inhand.com\/fr\/cases\/5g-connectivity-for-rv-travel\">La connectivit\u00e9 5G pour les voyages en camping-car<\/a>\n                    <\/div>\n                <\/div>\n            <\/div>\n        \n        <div class=\"vpro-bottom-spacer\"><\/div>\n    <\/div>\n    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>What Is DTU and What Can It Be Used for? DTU stands for Database Transaction Unit (also called serial server, IP Modem and industrial IoT terminal device), which can be used as a gateway in some application scenarios. The difference between &#8230; The network signal intensity of carriers varies from region to region. DTU is [&hellip;]<\/p>","protected":false},"author":1,"featured_media":960045,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[817],"tags":[],"case_tag":[],"class_list":["post-1012993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>InDTU Series Industrial IoT DTU Capabilities &amp; Applications<\/title>\n<meta name=\"description\" content=\"InDTU series industrial DTUs enable reliable Modbus TCP\/RTU conversion with dual SIM redundancy. 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