[et_pb_section fb_built=”1″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_heading title=”Phoneline Isolation Circuit Diagram” _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][\/et_pb_heading][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”]<\/p>\n
This is a simple phone line isolation circuit that I have used to safely connect phone lines to the MT8870 module. This is neccesary to make sure you protect the MT8870 module and also so you don’t affect the fire alarms ability to dial out and communicate codes to the central station receiver. Using this circuit makes it so that your device can eavesdrop on the phone lines like it’s not even there.<\/p>\n
[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_row _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.23.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/firealarmhackery.com\/wp-content\/uploads\/2024\/02\/Phoneline-Isolation-Circuit.png” alt=”Phoneline Isolation Circuit” title_text=”Phoneline Isolation Circuit” _builder_version=”4.24.0″ _module_preset=”default” hover_enabled=”0″ global_colors_info=”{}” sticky_enabled=”0″][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=”4.24.0″ _module_preset=”default”][et_pb_column _builder_version=”4.24.0″ _module_preset=”default” type=”4_4″][et_pb_image src=”https:\/\/firealarmhackery.com\/wp-content\/uploads\/2024\/02\/POTS-Isolation-Circuit.jpg” _builder_version=”4.24.0″ _module_preset=”default” alt=”Hand-drawn Arduino POTS Isolation Circuit” title_text=”Arduino POTS Isolation Circuit” hover_enabled=”0″ sticky_enabled=”0″][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"
This is a simple phone line isolation circuit that I have used to safely connect phone lines to the MT8870 module. This is neccesary to make sure you protect the MT8870 module and also so you don’t affect the fire alarms ability to dial out and communicate codes to the central station receiver. Using this […]<\/p>\n","protected":false},"author":1,"featured_media":213,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[20],"tags":[16,17,19,18],"class_list":["post-175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-janet-circuit-diagrams-and-schematics","tag-arduino","tag-arduino-teensy-4-2","tag-circuit-diagram","tag-schematic"],"jetpack_featured_media_url":"https:\/\/firealarmhackery.com\/wp-content\/uploads\/2024\/02\/Phoneline-Isolation-Circuit.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/posts\/175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/comments?post=175"}],"version-history":[{"count":5,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/posts\/175\/revisions"}],"predecessor-version":[{"id":215,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/posts\/175\/revisions\/215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/media\/213"}],"wp:attachment":[{"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/media?parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/categories?post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/firealarmhackery.com\/index.php\/wp-json\/wp\/v2\/tags?post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}