{"id":7820,"date":"2026-09-15T10:00:52","date_gmt":"2026-09-15T10:00:52","guid":{"rendered":"https:\/\/farhd.com\/?p=7820"},"modified":"2026-09-15T10:00:52","modified_gmt":"2026-09-15T10:00:52","slug":"can-your-product-survive-this-high-low-temperature-test-from-20%e2%84%83-to-70%e2%84%83","status":"publish","type":"post","link":"https:\/\/farhd.com\/ru\/can-your-product-survive-this-high-low-temperature-test-from-20%e2%84%83-to-70%e2%84%83\/","title":{"rendered":"Can Your Product Survive This? High-Low Temperature Test from -20\u2103 to 70\u2103"},"content":{"rendered":"<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-9-16 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Can Your Product Survive This? High-Low Temperature Test from -20\u2103 to 70\u2103\" width=\"563\" height=\"1000\" src=\"https:\/\/www.youtube.com\/embed\/i0JoMI9lDfA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Most video intercoms work fine in a showroom. But can they survive a freezing winter night, a scorching summer afternoon, and the rapid temperature swings in between? At FARHD, we don&#8217;t guess\u2014we test. Our high-low temperature chamber pushes products from -20\u2103 to +70\u2103 to prove they can handle the real world.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Every product looks good on a specification sheet. But specifications don&#8217;t tell you what happens when the temperature drops to -20\u2103 at 3 AM in a Russian winter, or when the sun beats down on an outdoor station at 70\u2103 in a Middle Eastern summer. They don&#8217;t reveal whether the screen will still be readable, whether the touch interface will respond, or whether the battery will hold its charge.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That is why FARHD runs every product through a&nbsp;<strong>high-low temperature test<\/strong>&nbsp;in our in-house environmental chamber. It&#8217;s one of the most demanding steps in our quality assurance process\u2014and one of the most important.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"why-temperature-testing-is-critical-for-video-intercoms\" class=\"wp-block-heading\">Why Temperature Testing Is Critical for Video Intercoms<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A video intercom is not a smartphone. It doesn&#8217;t live in a climate-controlled pocket. It is mounted at the building entrance, exposed to the elements 24 hours a day, 365 days a year.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consider what an outdoor station faces:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Winter nights<\/strong>\u00a0\u2013 Temperatures can plunge well below freezing, especially in Russia, Northern Europe, and Canada.<\/li>\n\n\n\n<li><strong>Summer afternoons<\/strong>\u00a0\u2013 Direct sunlight can push surface temperatures far beyond ambient air temperature, particularly in the Middle East and desert regions.<\/li>\n\n\n\n<li><strong>Day-night cycles<\/strong>\u00a0\u2013 Rapid temperature swings cause thermal expansion and contraction, stressing materials, seals, and solder joints.<\/li>\n\n\n\n<li><strong>Humidity and condensation<\/strong>\u00a0\u2013 Temperature changes can cause condensation inside sealed enclosures if the design is not robust.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">A product that isn&#8217;t tested for these conditions may work perfectly on day one\u2014and fail on day one hundred.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"the-farhd-high-low-temperature-test-20-to-70\" class=\"wp-block-heading\">The FARHD High-Low Temperature Test: -20\u2103 to +70\u2103<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Our high-low temperature test is conducted in a programmable environmental chamber that precisely controls temperature over time. Products are powered on and operating throughout the test, so we observe real-world performance\u2014not just passive survival.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Test parameters:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Parameter<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u0425\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0430<\/th><\/tr><\/thead><tbody><tr><td><strong>Low temperature<\/strong><\/td><td>-20\u2103<\/td><\/tr><tr><td><strong>High temperature<\/strong><\/td><td>+70\u2103<\/td><\/tr><tr><td><strong>Cycles<\/strong><\/td><td>Multiple transitions between extremes<\/td><\/tr><tr><td><strong>Dwell time<\/strong><\/td><td>Sustained exposure at each extreme<\/td><\/tr><tr><td><strong>Power state<\/strong><\/td><td>Powered on and fully operational<\/td><\/tr><tr><td><strong>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433<\/strong><\/td><td>Continuous, with periodic functional checks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u041f\u0440\u0438\u043c\u0435\u0447\u0430\u043d\u0438\u0435:<\/strong>&nbsp;The -20\u2103 limit applies specifically to our&nbsp;<strong>battery-powered wireless products<\/strong>, where lithium-ion chemistry sets a practical floor. For our&nbsp;<strong>wired video intercom systems<\/strong>, we test to an even more demanding&nbsp;<strong>-40\u2103<\/strong>\u2014you can read about that test here.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"what-we-check-during-the-test\" class=\"wp-block-heading\">What We Check During the Test<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Temperature testing is not just about whether a product turns on. We verify that every critical function continues to perform.<\/p>\n\n\n\n<h4 id=\"display-and-touch\" class=\"wp-block-heading\">Display and Touch<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>No black screen<\/strong>\u00a0\u2013 The display remains powered and visible at both extremes.<\/li>\n\n\n\n<li><strong>No flickering<\/strong>\u00a0\u2013 Backlight stability is maintained.<\/li>\n\n\n\n<li><strong>No distortion<\/strong>\u00a0\u2013 Colours remain accurate; no warping or lag.<\/li>\n\n\n\n<li><strong>Touch response<\/strong>\u00a0\u2013 Capacitive touch continues to register input correctly.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"camera-and-night-vision\" class=\"wp-block-heading\">Camera and Night Vision<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Image clarity<\/strong>\u00a0\u2013 Video remains sharp with no ghosting or noise.<\/li>\n\n\n\n<li><strong>Night vision activation<\/strong>\u00a0\u2013 IR LEDs and the IR cut filter switch correctly.<\/li>\n\n\n\n<li><strong>Lens clarity<\/strong>\u00a0\u2013 No fogging or condensation inside the lens assembly.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"audio\" class=\"wp-block-heading\">\u0410\u0443\u0434\u0438\u043e<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Microphone sensitivity<\/strong>\u00a0\u2013 Voice pickup remains clear.<\/li>\n\n\n\n<li><strong>Speaker output<\/strong>\u00a0\u2013 Volume and clarity are maintained.<\/li>\n\n\n\n<li><strong>\u0414\u0432\u0443\u0441\u0442\u043e\u0440\u043e\u043d\u043d\u044f\u044f \u0430\u0443\u0434\u0438\u043e\u0441\u0432\u044f\u0437\u044c<\/strong>\u00a0\u2013 Full-duplex conversation works without echo or dropout.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"power-and-battery\" class=\"wp-block-heading\">Power and Battery<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Charging behaviour<\/strong>\u00a0\u2013 Batteries charge safely within temperature limits.<\/li>\n\n\n\n<li><strong>Runtime<\/strong>\u00a0\u2013 Battery capacity holds up at low temperatures.<\/li>\n\n\n\n<li><strong>Thermal protection<\/strong>\u00a0\u2013 Charging stops automatically if the battery exceeds safe temperatures.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"wireless-and-connectivity\" class=\"wp-block-heading\">Wireless and Connectivity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>RF performance<\/strong>\u00a0\u2013 Wireless range and stability remain within specification.<\/li>\n\n\n\n<li><strong>Wi-Fi connection<\/strong>\u00a0\u2013 The device reconnects reliably after temperature cycling.<\/li>\n\n\n\n<li><strong>Signal integrity<\/strong>\u00a0\u2013 No packet loss or disconnections.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"physical-integrity\" class=\"wp-block-heading\">Physical Integrity<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>No cracking<\/strong>\u00a0\u2013 Housings and glass lenses remain intact.<\/li>\n\n\n\n<li><strong>No delamination<\/strong>\u00a0\u2013 Screen bonding holds.<\/li>\n\n\n\n<li><strong>No seal failure<\/strong>\u00a0\u2013 IP65 weatherproofing is preserved.<\/li>\n\n\n\n<li><strong>No condensation<\/strong>\u00a0\u2013 Internal electronics stay dry.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"why-20-for-wireless-products\" class=\"wp-block-heading\">Why -20\u2103 for Wireless Products?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you are wondering why our battery-powered products are tested to -20\u2103 rather than -40\u2103, the answer lies in battery chemistry.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lithium-ion batteries\u2014the same technology used in smartphones and electric vehicles\u2014experience reduced capacity and slower charging at low temperatures. Below -20\u2103, many cells become unreliable, and charging can become unsafe without sophisticated heating systems. Rather than overstate our specifications, we test our wireless products to the limits of their realistic operating range, and we build in&nbsp;<strong>thermal protection<\/strong>&nbsp;to ensure safe behaviour at the edges.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For wired products, which draw power from mains electricity and don&#8217;t rely on battery chemistry, we push the limit to&nbsp;<strong>-40\u2103<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This honest approach to specification is part of what sets FARHD apart. We don&#8217;t claim performance we can&#8217;t prove.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"what-the-test-proves\" class=\"wp-block-heading\">What the Test Proves<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After completing the full high-low temperature cycle, FARHD products demonstrate:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Condition<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442<\/th><\/tr><\/thead><tbody><tr><td><strong>-20\u2103<\/strong><\/td><td>Powers on, display readable, touch responsive, camera and audio functional<\/td><\/tr><tr><td><strong>+70\u2103<\/strong><\/td><td>No black screen, no flickering, stable performance<\/td><\/tr><tr><td><strong>Rapid transitions<\/strong><\/td><td>No cracking, no condensation, no seal failure<\/td><\/tr><tr><td><strong>Post-test function<\/strong><\/td><td>All features work normally after returning to room temperature<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This means that whether your project is in&nbsp;<strong>Moscow, Helsinki, Toronto, Dubai, or Riyadh<\/strong>, FARHD products are engineered to perform.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"where-this-matters-most\" class=\"wp-block-heading\">Where This Matters Most<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Temperature reliability is not a theoretical concern. It directly affects project outcomes in specific regions and applications.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Region \/ Application<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u041f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e FARHD<\/th><\/tr><\/thead><tbody><tr><td><strong>Russia &amp; CIS<\/strong><\/td><td>Prolonged sub-zero winters<\/td><td>Wired systems tested to -40\u2103; wireless to -20\u2103<\/td><\/tr><tr><td><strong>Northern Europe<\/strong><\/td><td>Cold, humid winters<\/td><td>Sealed housings prevent condensation<\/td><\/tr><tr><td><strong>\u0411\u043b\u0438\u0436\u043d\u0438\u0439 \u0412\u043e\u0441\u0442\u043e\u043a<\/strong><\/td><td>Extreme summer heat, direct sun<\/td><td>Stable operation at +70\u2103<\/td><\/tr><tr><td><strong>Canada<\/strong><\/td><td>Freezing winters, hot summers<\/td><td>Full-cycle reliability<\/td><\/tr><tr><td><strong>Desert regions<\/strong><\/td><td>Rapid day-night temperature swings<\/td><td>No cracking or distortion after cycling<\/td><\/tr><tr><td><strong>Coastal areas<\/strong><\/td><td>Salt air plus temperature variation<\/td><td>Corrosion-resistant materials and sealed construction<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For distributors and integrators, specifying a product that has been temperature-tested means fewer warranty claims and happier customers. For developers, it means a system that won&#8217;t generate maintenance calls in the first year.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"the-farhd-quality-assurance-philosophy\" class=\"wp-block-heading\">The FARHD Quality Assurance Philosophy<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The high-low temperature test is one part of a broader quality system that includes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Functional testing<\/strong>\u00a0\u2013 display, touch, camera, audio, calling, and unlocking<\/li>\n\n\n\n<li><strong>Aging room testing<\/strong>\u00a0\u2013 12+ hours of continuous operation under elevated temperature and humidity<\/li>\n\n\n\n<li><strong>Waterproof testing<\/strong>\u00a0\u2013 IP65 verification on every outdoor station<\/li>\n\n\n\n<li><strong>Temperature cycling<\/strong>\u00a0\u2013 as described in this article<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Every FARHD product carries&nbsp;<strong>CE, FCC, RoHS, IP65, and EMC certifications<\/strong>, and our factory has completed over&nbsp;<strong>10,000 large-scale projects<\/strong>&nbsp;across more than&nbsp;<strong>90 countries<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We test because we know that the field is where it matters. A product that passes our chamber is a product you can trust in yours.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 id=\"can-your-product-survive-this\" class=\"wp-block-heading\">Can Your Product Survive This?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If you are sourcing video intercoms for a project in a challenging climate, ask your supplier one simple question:&nbsp;<em>&#8220;Can your product survive this?&#8221;<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the answer is not backed by a documented temperature test, you are taking a risk.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FARHD products are tested. FARHD products are proven. And FARHD is ready to support your next project\u2014whether it&#8217;s a single villa in Siberia or a thousand-unit development in the Gulf.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udce9&nbsp;<strong>Contact us for catalog, pricing, or to request a temperature test report.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83c\udf10&nbsp;<strong>Website:<\/strong>&nbsp;<a href=\"https:\/\/farhd.com\/ru\/\" target=\"_blank\" rel=\"noopener\">www.farhd.com<\/a><br>\ud83d\udce7&nbsp;<strong>Email:<\/strong>&nbsp;info@farhd.com<br>\ud83d\udcde&nbsp;<strong>Phone:<\/strong>&nbsp;+86 199 2542 6578<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>FARHD \u2013 Video Intercom Manufacturer Since 1998.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>#VideoIntercom #TemperatureTest #HighLowTemperature #ExtremeWeather #BuildingSecurity #FARHD #OEM #ODM #QualityControl<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Most video intercoms work fine in a showroom. But can they survive a freezing winter night, a scorching summer afternoon, and the rapid temperature swings in between? At FARHD, we don&#8217;t guess\u2014we test. Our high-low temperature chamber pushes products from -20\u2103 to +70\u2103 to prove they can handle the real world. Every product looks good&#8230;<\/p>","protected":false},"author":2,"featured_media":7823,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-7820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}]},"featured_image_src_large":["https:\/\/farhd.com\/wp-content\/uploads\/2026\/09\/27-640x1024.jpg",640,1024,true],"author_info":{"display_name":"Kevin","author_link":"https:\/\/farhd.com\/ru\/author\/kevin\/"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":511,"filter":"raw","term_order":"0","cat_ID":1,"category_count":511,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/posts\/7820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/comments?post=7820"}],"version-history":[{"count":1,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/posts\/7820\/revisions"}],"predecessor-version":[{"id":7824,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/posts\/7820\/revisions\/7824"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/media\/7823"}],"wp:attachment":[{"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/media?parent=7820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/categories?post=7820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/farhd.com\/ru\/wp-json\/wp\/v2\/tags?post=7820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}