{"id":11922,"date":"2026-01-09T14:31:46","date_gmt":"2026-01-09T13:31:46","guid":{"rendered":"https:\/\/docs.kentix.com\/?post_type=ht_kb&#038;p=11922"},"modified":"2026-02-19T09:25:35","modified_gmt":"2026-02-19T08:25:35","slug":"kio2251-datasheet","status":"publish","type":"ht_kb","link":"https:\/\/docs.kentix.com\/en\/knowledge-base\/kio2251-datasheet\/","title":{"rendered":"KIO2251 &#8211; DATASHEET"},"content":{"rendered":"\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Function<\/strong><\/td><td>Expansion module for connecting up to 16 digital inputs<\/td><\/tr><tr><td><strong>Connection options<\/strong><strong>\u00f6<\/strong><strong>possibility<\/strong><\/td><td>Log4J<\/td><\/tr><tr><td><strong>Configuration<\/strong><\/td><td>Integr. Web server (HTTP)<br\/>Default IP: 192.168.255.1<\/td><\/tr><tr><td><strong>Protocols<\/strong><\/td><td>Modbus TCP \/ UDP, MQTT, SNMP v2c<\/td><\/tr><tr><td><strong>Security<\/strong><\/td><td>ID, password and IP filter<\/td><\/tr><tr><td><strong>Connection terminals<\/strong><\/td><td>Pluggable spring terminals for cables up to 1 mm\u00b2<\/td><\/tr><tr><td><strong>Enter<\/strong><strong>\u00e4<\/strong><strong>nge<\/strong><\/td><td>Channels: 16 digital inputs<br\/>Type: potential-free and floating wiring possible<br\/>Counter function: 32 bit, max. 3 kHz <\/td><\/tr><tr><td><strong>Insulation<\/strong><\/td><td>I\/O isolation: 3000 V DC<\/td><\/tr><tr><td><strong>Environment<\/strong><\/td><td>Operating temperature: -25 to +75 \u00b0C<br\/>Humidity: 10 to 90 % RH, non-condensing<\/td><\/tr><tr><td><strong>Network<\/strong><\/td><td>2x RJ45, LAN 10\/100 Base-TX<\/td><\/tr><tr><td><strong>Power supply<\/strong><\/td><td>PoE (Class 1) or external power supply unit 10-48VDC, 3.6W<\/td><\/tr><tr><td><strong>Go<\/strong><strong>\u00e4<\/strong><strong>use<\/strong><\/td><td>33 x 126 x 108 mm (DIN rail mounting)<\/td><\/tr><tr><td><strong>Scope of delivery<\/strong><\/td><td>KIO2251, 3m patch cable, instructions<\/td><\/tr><tr><td><strong><strong><strong>Certification<\/strong><\/strong><\/strong><\/td><td>CE, FCC, RoHS compliant<\/td><\/tr><tr><td><strong>Accessories<\/strong><strong>\u00f6<\/strong><strong>r<\/strong><\/td><td>Power supply unit or PoE injector if no PoE supply is available<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h2 class=\"wp-block-heading\">Terminal assignment<\/h2>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1930\" height=\"1412\" src=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bildschirmfoto-2025-11-04-um-08.43.41.png\" alt=\"\" class=\"wp-image-12188\" srcset=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bildschirmfoto-2025-11-04-um-08.43.41.png 1930w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bildschirmfoto-2025-11-04-um-08.43.41-400x293.png 400w\" sizes=\"auto, (max-width: 1930px) 100vw, 1930px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">Wiring<\/h2>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"686\" src=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-1024x686.jpeg\" alt=\"\" class=\"wp-image-12190\" srcset=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-1024x686.jpeg 1024w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-400x268.jpeg 400w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-150x101.jpeg 150w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-768x515.jpeg 768w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-50x34.jpeg 50w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-1536x1030.jpeg 1536w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-60x40.jpeg 60w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19-100x67.jpeg 100w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.19.jpeg 2038w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"370\" src=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-1024x370.jpeg\" alt=\"\" class=\"wp-image-12192\" srcset=\"https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-1024x370.jpeg 1024w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-400x144.jpeg 400w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-150x54.jpeg 150w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-768x277.jpeg 768w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-50x18.jpeg 50w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-1536x555.jpeg 1536w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-60x22.jpeg 60w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23-100x36.jpeg 100w, https:\/\/docs.kentix.com\/wp-content\/uploads\/2025\/11\/Bild-04.11.25-um-10.23.jpeg 2032w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Function Expansion module for connecting up to 16 digital inputs Connection options\u00f6possibility Log4J Configuration Integr. Web server (HTTP)Default IP: 192.168.255.1 Protocols Modbus TCP \/ UDP, MQTT, SNMP v2c Security ID, password and IP filter Connection terminals Pluggable spring terminals for cables up to 1 mm\u00b2 Enter\u00e4nge Channels: 16 digital inputsType:&#8230;<\/p>\n","protected":false},"author":11,"featured_media":12468,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_crdt_document":"","inline_featured_image":false,"footnotes":""},"ht-kb-category":[94,97],"ht-kb-tag":[],"class_list":["post-11922","ht_kb","type-ht_kb","status-publish","format-standard","has-post-thumbnail","hentry","ht_kb_category-data-sheets-en","ht_kb_category-data-sheets-en-4"],"custom_fields":{"kentix_order_code":["KIO2251"]},"categories":[{"slug":"data-sheets-en","name":"Datasheets","shortName":""},{"slug":"data-sheets-en-4","name":"Datasheets","shortName":""}],"featured_media_url":"https:\/\/docs.kentix.com\/wp-content\/uploads\/2026\/01\/KIO2251-FRONT-150x150.webp","_links":{"self":[{"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb\/11922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/comments?post=11922"}],"version-history":[{"count":2,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb\/11922\/revisions"}],"predecessor-version":[{"id":12669,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb\/11922\/revisions\/12669"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/media\/12468"}],"wp:attachment":[{"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/media?parent=11922"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb-category?post=11922"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/docs.kentix.com\/en\/wp-json\/wp\/v2\/ht-kb-tag?post=11922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}