{"id":6836,"date":"2025-06-13T14:10:23","date_gmt":"2025-06-13T12:10:23","guid":{"rendered":"https:\/\/bieler-lang.de\/?post_type=product&p=6836"},"modified":"2025-09-23T11:42:28","modified_gmt":"2025-09-23T09:42:28","slug":"rk-8420","status":"publish","type":"product","link":"https:\/\/bieler-lang.de\/en\/product\/rk-8420\/","title":{"rendered":"RK 8420 – Extension for GMC 8420"},"content":{"rendered":"

The RK 8420<\/strong> was developed to extend the functionality of the GMC 8420<\/strong> evaluation unit. It serves as an optional extension of the relay outputs and has four freely programmable relay outputs for alarm 1, 2 and horn.<\/p>\n

 <\/p>\n

Features of the RK 8420:<\/h6>\n
    \n
  • Extension for GMC 8420<\/li>\n
  • 4 freely programmable relays<\/li>\n
  • Parameters freely adjustable for each measuring channel:
    \n– Alarm threshold alarm 1
    \n– Alarm threshold alarm 2
    \n– Alarm output on exceeding\/falling below
    \n– Alarm storing \/ not storing
    \n– Zero point capture<\/li>\n<\/ul>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    The RK 8420<\/strong> was developed as an accessory for the GMC 8422 evaluation unit. It has four freely programmable relay outputs for alarm 1, 2 and horn.<\/p>\n

    Special features:<\/h6>\n
      \n
    • EX zone 2<\/li>\n
    • Quick wall mounting<\/li>\n
    • Simple operation<\/li>\n<\/ul>\n
      Our quality standards:<\/h6>\n
        \n
      • Solid and proven device design<\/li>\n
      • Very durable with low maintenance costs<\/li>\n
      • Developed and manufactured in Germany<\/li>\n<\/ul>\n

         <\/p>\n

         <\/p>\n","protected":false},"featured_media":6882,"template":"","meta":{"inline_featured_image":false},"product_brand":[],"product_cat":[288,101,153],"product_tag":[],"class_list":{"0":"post-6836","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-accessories-for-gas-warning-devices-en","7":"product_cat-ex-zone-2-en","8":"product_cat-not-ex-areas-safe-area-en","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"\nRK 8420 - Extension for GMC 8420 - Bieler+Lang<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bieler-lang.de\/en\/product\/rk-8420\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RK 8420 - Extension for GMC 8420\" \/>\n<meta property=\"og:description\" content=\"The RK 8420 was developed as an accessory for the GMC 8422 evaluation unit. It has four freely programmable relay outputs for alarm 1, 2 and horn. Special features: EX zone 2 Quick wall mounting Simple operation Our quality standards: Solid and proven device design Very durable with low maintenance costs Developed and manufactured in Germany    \" \/>\n<meta property=\"og:url\" content=\"https:\/\/bieler-lang.de\/en\/product\/rk-8420\/\" \/>\n<meta property=\"og:site_name\" content=\"Bieler+Lang\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=61560570132188\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-23T09:42:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bieler-lang.de\/blcontent\/uploads\/2025\/06\/BielerLang-RK-8420-add-on-option-for-controller-GMC-8420_perpective-view.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/\",\"url\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/\",\"name\":\"RK 8420 - Extension for GMC 8420 - Bieler+Lang\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/bieler-lang.de\\\/blcontent\\\/uploads\\\/2025\\\/06\\\/BielerLang-RK-8420-add-on-option-for-controller-GMC-8420_perpective-view.jpg\",\"datePublished\":\"2025-06-13T12:10:23+00:00\",\"dateModified\":\"2025-09-23T09:42:28+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/#primaryimage\",\"url\":\"https:\\\/\\\/bieler-lang.de\\\/blcontent\\\/uploads\\\/2025\\\/06\\\/BielerLang-RK-8420-add-on-option-for-controller-GMC-8420_perpective-view.jpg\",\"contentUrl\":\"https:\\\/\\\/bieler-lang.de\\\/blcontent\\\/uploads\\\/2025\\\/06\\\/BielerLang-RK-8420-add-on-option-for-controller-GMC-8420_perpective-view.jpg\",\"width\":1200,\"height\":1080,\"caption\":\"Bieler+Lang RK 8420 add on option for controller GMC 8420_perpective view\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/product\\\/rk-8420\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/bieler-lang.de\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"RK 8420 – Extension for GMC 8420\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bieler-lang.de\\\/#website\",\"url\":\"https:\\\/\\\/bieler-lang.de\\\/\",\"name\":\"Bieler+Lang\",\"description\":\"Eine weitere WordPress-Website\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/bieler-lang.de\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"RK 8420 - Extension for GMC 8420 - Bieler+Lang","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:\/\/bieler-lang.de\/en\/product\/rk-8420\/","og_locale":"en_US","og_type":"article","og_title":"RK 8420 - Extension for GMC 8420","og_description":"The RK 8420 was developed as an accessory for the GMC 8422 evaluation unit. 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