{"id":10558,"date":"2025-07-18T17:44:16","date_gmt":"2025-07-18T17:44:16","guid":{"rendered":"https:\/\/csiag.eu\/?p=10558"},"modified":"2025-08-04T07:03:02","modified_gmt":"2025-08-04T07:03:02","slug":"homematic-send-receive-module","status":"publish","type":"post","link":"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/","title":{"rendered":"Homematic - Transmitter \/ receiver module"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Eigenschaften\" >Characteristics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Beispiel_%E2%80%93_Zisternen-Wasserstand_erfassen\" >Example - Recording the cistern water level<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Sensor\" >sensor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Elektronik\" >electronics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Anlernen_der_Module\" >Teaching the modules<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Zentrale_in_den_Anlern-Modus_versetzen\" >Set the control panel to teach-in mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Sende-Modul_in_den_Anlern-Modus_versetzen\" >Set the transmitter module to teach-in mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Empfangs-Modul_in_den_Anlern-Modus_versetzen\" >Set the receiver module to teach-in mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Posteingang\" >inbox<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/#Visualisierung\" >Visualization<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p>The Homematic <em><a href=\"https:\/\/de.elv.com\/p\/elv-homematic-bausatz-funk-sendemodul-8-bit-hm-mod-em-8bit-fuer-smart-home-hausautomation-P150253\/\" target=\"_blank\" rel=\"noreferrer noopener\">Transmitter module HM-MOD-EM<\/a><\/em> is used to implement switching states, which are detected via 8 independently acting inputs by means of high or low level and forwarded to the control center by radio, while the <a href=\"https:\/\/de.elv.com\/p\/elv-bausatz-homematic-ip-modulplatine-opencollector-8-fach-hmip-mod-oc8-P150850\/?utm_source=google&amp;utm_medium=cpc&amp;utm_campaign=perfmax_shopping_de&amp;refid=Gads&amp;Gads_PerfMax_Shopping&amp;gad_source=1&amp;gad_campaignid=20522237738\" target=\"_blank\" rel=\"noreferrer noopener\">Receive module <em>HmIP-MOD-OC8<\/em><\/a> Switching tasks via open collector outputs (This module is the successor to the no longer available <em>HM-MOD-Re-8<\/em> in the <em>IP version<\/em>) takes over.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Eigenschaften\"><\/span>Characteristics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Both modules can be operated with two AA batteries, DC 2 - 3.3 V or also 3.5 - 12 V and can therefore be used very flexibly.<\/p>\n\n\n\n<p>The very small size allows installation in a small, waterproof housing, which can also accommodate a battery holder for the two AA batteries if required. The antenna can remain in the plastic (!) housing and does not need to be removed from it.<\/p>\n\n\n\n<p>The receiver module also has 8 buttons that can be used to activate the assigned switching output, regardless of the actual programming on the <a href=\"https:\/\/csiag.eu\/en\/smart-home-raspberry-pi\/\" target=\"_blank\" data-type=\"post\" data-id=\"36\" rel=\"noreferrer noopener\">Headquarters<\/a>can be switched, e.g. to carry out function tests on site.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Beispiel_%E2%80%93_Zisternen-Wasserstand_erfassen\"><\/span>Example - Recording the cistern water level<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Suppose you want to remotely monitor the water level in a cistern. To do this, the cistern is fitted with a PVC pipe (e.g. installation pipe) corresponding to the depth and attached to the edge of the shaft ring with pipe clamps.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sensor\"><\/span>sensor<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Depending on the depth of the cistern, several pipes are inserted into each other and glued together in the sockets using PVC adhesive. The end of the pipe is sealed with a PVC cap, which is also glued on. <\/p>\n\n\n\n<p>A <a href=\"https:\/\/www.amazon.de\/Lapp-Steuerleitung-gr%C3%BCn-gelben-Schutzleiter-Steuerkabel\/dp\/B08CY3GFW2\/ref=sr_1_2?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&amp;crid=3ENP3R1AQNY77&amp;dib=eyJ2IjoiMSJ9.SF8NUikRxqybvARL2VHrHyLmr77VNgycAlYl4zPV-I_bx57PVr5vi1OmKZXLCM2fY_WiaihOHs9jHhiriAYLDf1x_Q9itDH2BL-gjFweM-cImomjpqqmnad1WHvoBEP7zoRAKXdIkqlseHFL12ppiCFVI_KyBuxXnjQeHD9LoVqqilVuTkRAcutzCmsvedsgk7RUuAEHukGmS6oxKyG8kAQVa-FwZgZ0jAq4SQyiLB3DSa33lbfed5_E0NR2Vk-9bgfNDEtkkMM_FAhIRDila69lgwPIvG1FrLY2DmV8VXc.Qh5JAEB2rxElKIyWlX2BJ_H0vdxFpdwvxgoByaqbat8&amp;dib_tag=se&amp;keywords=steuerkabel+11-adrig&amp;qid=1752863641&amp;sprefix=steuerkabel+11-adrig%2Caps%2C213&amp;sr=8-2\" target=\"_blank\" rel=\"noreferrer noopener\">12-core cable<\/a> (control cable with numbered cores) is fed into the pipe. The individual wires are routed to the outside through holes drilled at intervals of one tenth of the total pipe length (= depth of the cistern).<br>With a very deep cistern, the cables are first pushed through the two meter pipe segments before(!) they are glued together.<br>For this purpose, a rigid 1.5 mm<sup>2<\/sup>-copper wire (e.g. <a href=\"https:\/\/www.amazon.de\/Kalitec-flammwidrige-Einzelader-Verdrahtungsleitung-Verdrahtung\/dp\/B0F8QDF1TB\/ref=sr_1_3?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&amp;crid=3N887N1U2OAFU&amp;dib=eyJ2IjoiMSJ9.TAVK31vr_Pit1TEXQnnukEZSm4msCs-_CpxpzRSc52ULElr6L_C8Uj4tKtdSoNUaVjr3Usnb5A0NtMvC3WHt9HPGu3vT5wiXAM0qUaA4SNeY3WWnlUGkFODMyggL0jmwgNqrTEiqgQtlPzqql8RsRuvCOIXi9_Ufzwhp6FlM6NAIKcnEdhM35Kpj-Wk8coRdb6FnS7oFFutLTUhCmD3NJJKKj5RoM5goMWjBXkfLPbtbOiQR6sFk1dm48r_vn3mO632LafaxchOovYuL9vP4uh89z3Lcl35dlHPEDcwkBmc.r9Nsq4bqpuQtJbhfaLwLdSpA31x4qbEFGC26A641J5k&amp;dib_tag=se&amp;keywords=1%2C5mm2+einadrig+starr&amp;qid=1752863888&amp;sprefix=1+5mm2+einadrig+starr%2Caps%2C245&amp;sr=8-3\" target=\"_blank\" rel=\"noreferrer noopener\">Single-core installation cable<\/a>), which is pushed through the relevant hole towards the upper end of the pipe, the respective cables, fixed to the copper wire with insulating tape, are pulled through the corresponding hole one after the other.<\/p>\n\n\n\n<p>The eleventh or twelfth cable serves as an earth connection and is attached to the lower end of the tube with a stainless steel screw glued into the end cap. <br>The remaining ten cables are used to query the water levels in 10 % steps (10 .. 100 %) and are connected in the same way as the earth connection, to stainless steel screws (fastened using suitable cable eyelets, washers and nuts), which are then glued watertight in the borehole.<\/p>\n\n\n\n<p>The top of the pipe should also be sealed with a watertight cable gland. Now that the pipe is sealed watertight, there is no risk of corrosion of the copper cable connections inside it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Elektronik\"><\/span>electronics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The other end of the cable is now fed via an IP67 cable gland into a watertight PVC box containing two of the above-mentioned transmitter modules together with a battery holder (or battery with external - small - PV module).<\/p>\n\n\n\n<p>After connecting the power supply, both transmitter modules can be taught to the control panel and set to the desired function with the appropriate programming.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Anlernen_der_Module\"><\/span>Teaching the modules<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Zentrale_in_den_Anlern-Modus_versetzen\"><\/span>Set the control panel to teach-in mode<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Call up the web GUI in the alarm panel and click on \"Teach-in devices\" in the top right-hand corner. This starts the central unit's teach-in mode for 60 seconds.<\/p>\n\n\n\n<p>The teach-in process can be repeated as required.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sende-Modul_in_den_Anlern-Modus_versetzen\"><\/span>Set the transmitter module to teach-in mode<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>The transmitter module has a button at the bottom which, when pressed once briefly, puts the module into teach-in mode for 20 seconds.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Empfangs-Modul_in_den_Anlern-Modus_versetzen\"><\/span>Set the receiver module to teach-in mode<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>The receiver module is set to teach-in mode by pressing one of the eight buttons for at least 4 seconds.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Posteingang\"><\/span>inbox<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Once the devices have been successfully programmed, they appear in the control panel's inbox, where they can be given individual names and configured.<br>Apart from the naming of the devices and their channels, all parameters can normally be left as standard.<br>The individual channels should be given descriptive names so that it is clear later which channel represents which percentage (10 .. 100 %) in the above example.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Visualisierung\"><\/span>Visualization<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Means <a href=\"https:\/\/csiag.eu\/en\/smarthome-aio-creator-neo\/\" target=\"_blank\" data-type=\"post\" data-id=\"2701\" rel=\"noreferrer noopener\">AIO Creator<\/a> the switching states of the inputs of both modules can be queried and graphically converted into a tank display, which provides information about the fill level of the cistern, e.g. via a bar graph (bar display).<\/p>","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading time<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The Homematic transmitter module HM-MOD-EM is used to implement switching states, which are detected via 8 independent inputs using high or low levels and forwarded to the control center via radio, while the receiver module HmIP-MOD-OC8 takes over switching tasks via open collector outputs (this module is the successor to the IP version of the HM-MOD-Re-8, which is no longer available). Features Both...&nbsp;<a href=\"https:\/\/csiag.eu\/en\/blog\/2025\/07\/18\/homematic-sende-empfangs-modul\/\" rel=\"bookmark\">Read More \"<span class=\"screen-reader-text\">Homematic - Transmitter \/ receiver module<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[346],"tags":[5252,793,2890,5254,919,5255,5263,5258,5257,432,5253,5249,5237,848,5262,5238,5239,377,843,5251,5250,915,712,4477,5260,5261,5259,5240,924,462,930,5244,5246,5245,5236,5247,5256,5248,541,5243,555,5242],"class_list":["post-10558","post","type-post","status-publish","format-standard","hentry","category-smarthome","tag-aa-batterie","tag-aio-creator","tag-akku","tag-anlern-modus","tag-anlernen","tag-anlernmodus","tag-anzeige","tag-balkenanzeige","tag-bargraph","tag-batterie","tag-batterie-halter","tag-edelstahlschraube","tag-empfangs-modul","tag-fuellstand","tag-grafisch","tag-hm-mod-em","tag-hm-mod-re-8","tag-homematic","tag-installationsrohr","tag-ip67","tag-kabelverschraubung","tag-konfigurieren","tag-masse","tag-masse-verbindung","tag-name","tag-namen","tag-namensvergabe","tag-open-collector","tag-posteingang","tag-programmierung","tag-pv-modul","tag-pvc-rohr","tag-schachtring","tag-schaltausgang","tag-sende-modul","tag-steuerkabel","tag-tankanzeige","tag-verlegekabel","tag-visualisierung","tag-wasserstand","tag-zentrale","tag-zisterne"],"modified_by":"Achim Goerner","_links":{"self":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts\/10558","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/comments?post=10558"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/posts\/10558\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/media?parent=10558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/categories?post=10558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/en\/wp-json\/wp\/v2\/tags?post=10558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}