{"id":190425,"date":"2025-12-16T11:25:34","date_gmt":"2025-12-16T04:25:34","guid":{"rendered":"https:\/\/techmaster.com.vn\/?post_type=product&#038;p=190425"},"modified":"2026-10-19T23:04:48","modified_gmt":"2026-10-19T16:04:48","slug":"keysight-34401a-digital-multimeter","status":"publish","type":"product","link":"https:\/\/techmaster.com.vn\/en\/keysight-34401a-digital-multimeter\/","title":{"rendered":"Keysight 34401A Digital Multimeter"},"content":{"rendered":"<style>.kx{font-family:'Roboto',system-ui,sans-serif;color:#2a2f36;line-height:1.65;font-size:16px;max-width:1080px;margin:0 auto} .kx *{box-sizing:border-box} .kx h2,.kx h3{font-family:'Be Vietnam Pro',system-ui,sans-serif;color:#123E78;font-weight:800;line-height:1.2;margin:0} .kx h2{font-size:clamp(22px,2.6vw,30px);margin:0 0 14px}.kx h3{font-size:20px;margin:0 0 12px} .kx p{margin:0 0 14px}.kx p strong{color:#123E78}.kx a{color:#1B55A6;text-decoration:none} .kx .eyebrow{font-family:'Be Vietnam 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10px 26px rgba(14,52,112,.1);transform:translateY(-3px)} .kx .card .i{font-size:24px;margin-bottom:10px}.kx .card h3{font-size:15px;margin-bottom:5px}.kx .card p{font-size:13.5px;color:#5b6b80;margin:0} @media(max-width:900px){.kx .cards,.kx .cards.c3{grid-template-columns:1fr 1fr}}@media(max-width:520px){.kx .cards,.kx .cards.c3{grid-template-columns:1fr}} .kx .faq details{background:#fff;border:1px solid #e4ebf4;border-radius:10px;padding:2px 20px;margin-bottom:12px}.kx .faq details[open]{box-shadow:0 2px 10px rgba(14,52,112,.06)} .kx .faq summary{list-style:none;cursor:pointer;font-family:'Be Vietnam Pro',sans-serif;font-weight:700;color:#123E78;font-size:16px;padding:16px 0;display:flex;justify-content:space-between;gap:14px}.kx .faq summary::-webkit-details-marker{display:none}.kx .faq summary::after{content:\"+\";font-size:22px;color:#1B55A6}.kx .faq details[open] summary::after{content:\"\u2013\"} .kx .faq .a{padding:0 0 18px;color:#5b6b80;font-size:15px}.kx .faq .a strong{color:#123E78} .kx .cta{background:linear-gradient(120deg,#0E3470,#1B55A6);color:#fff;border-radius:18px;padding:34px 30px;text-align:center}.kx .cta h3{color:#fff;font-size:22px;margin-bottom:8px}.kx .cta p{color:rgba(255,255,255,.85);margin-bottom:18px} .kx .cta a{display:inline-block;font-family:'Be Vietnam Pro',sans-serif;font-weight:700;border-radius:999px;padding:12px 26px;margin:4px}.kx .cta .b1{background:#C70032;color:#fff}.kx .cta .b2{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}.kx .ngrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:4px 0 6px}.kx .ncard{position:relative;display:block;height:152px;border-radius:12px;overflow:hidden;background-size:cover;background-position:center;text-decoration:none;box-shadow:0 2px 10px rgba(14,52,112,.10);transition:transform .25s,box-shadow .25s}.kx .ncard:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(14,52,112,.22)}.kx .ncard .nov{position:absolute;left:0;right:0;top:0;bottom:0;background:linear-gradient(180deg,rgba(9,26,62,0) 0%,rgba(9,26,62,.28) 38%,rgba(9,26,62,.72) 70%,rgba(9,26,62,.90) 100%)}.kx .ncard .nlb{position:absolute;left:14px;right:14px;bottom:11px;height:2.6em;display:block;overflow:hidden;color:#fff;font-family:'Be Vietnam Pro',system-ui,sans-serif;font-weight:700;font-size:15.5px;line-height:1.3;text-shadow:0 1px 6px rgba(0,0,0,.55)}.kx .ncard .nar{position:absolute;right:12px;top:10px;color:#fff;font-size:15px;opacity:.85}@media(max-width:900px){.kx .ngrid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.kx .ngrid{grid-template-columns:1fr}.kx .ncard{height:136px}}.kx .cta .b1 .ic{display:inline-block;filter:brightness(0) invert(1)}<\/style>\n<h3 data-start=\"243\" data-end=\"312\">Keysight 34401A Digital Multimeter \u2013 Legendary 6\u00bd Digit Bench DMM<\/h3>\n<figure id=\"attachment_190420\" aria-describedby=\"caption-attachment-190420\" style=\"width: 1164px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/12\/Keysight-34401A.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-190420\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/12\/Keysight-34401A.png\" alt=\"Keysight 34401A \" width=\"1164\" height=\"628\" \/><\/a><figcaption id=\"caption-attachment-190420\" class=\"wp-caption-text\">Keysight 34401A<\/figcaption><\/figure>\n<p data-start=\"232\" data-end=\"568\">The Keysight 34401A Digital Multimeter delivers 6\u00bd digit resolution for precise and stable measurements in laboratory, production, and system applications. It supports 10 essential measurement functions, including DC and AC voltage, DC and AC current, 2- and 4-wire resistance, diode test, continuity, frequency, and period.<\/p>\n<p data-start=\"570\" data-end=\"922\">With a basic accuracy of 0.0035% for DC and 0.06% for AC, the 34401A ensures reliable measurement performance across a wide range of test conditions. The instrument allows input levels up to 1000 V maximum voltage and 3 A maximum current, making it suitable for general-purpose electronics testing as well as power-related measurements.<\/p>\n<h3 data-start=\"649\" data-end=\"678\">Measurement Capability<\/h3>\n<ul data-start=\"679\" data-end=\"970\">\n<li data-start=\"679\" data-end=\"704\">\n<p data-start=\"681\" data-end=\"704\">6\u00bd digit resolution<\/p>\n<\/li>\n<li data-start=\"705\" data-end=\"837\">\n<p data-start=\"707\" data-end=\"837\">10 measurement functions:<br data-start=\"736\" data-end=\"739\" \/>DC\/AC voltage, DC\/AC current, 2- and 4-wire resistance, diode, continuity, frequency, and period<\/p>\n<\/li>\n<li data-start=\"838\" data-end=\"901\">\n<p data-start=\"840\" data-end=\"861\">Basic accuracy:<\/p>\n<ul data-start=\"864\" data-end=\"901\">\n<li data-start=\"864\" data-end=\"883\">\n<p data-start=\"866\" data-end=\"883\">DC: 0.0035%<\/p>\n<\/li>\n<li data-start=\"886\" data-end=\"901\">\n<p data-start=\"888\" data-end=\"901\">AC: 0.06%<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"902\" data-end=\"937\">\n<p data-start=\"904\" data-end=\"937\">Maximum input voltage: 1000 V<\/p>\n<\/li>\n<li data-start=\"938\" data-end=\"970\">\n<p data-start=\"940\" data-end=\"970\">Maximum input current: 3 A<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"972\" data-end=\"1117\">This makes the 34401A ideal for component testing, calibration tasks, and high-accuracy electrical measurements in quality-critical applications.<\/p>\n<h3 data-start=\"1119\" data-end=\"1157\">System &amp; Automation Performance<\/h3>\n<ul data-start=\"1158\" data-end=\"1400\">\n<li data-start=\"1158\" data-end=\"1208\">\n<p data-start=\"1160\" data-end=\"1208\">Measurement speed up to 1000 readings\/second<\/p>\n<\/li>\n<li data-start=\"1209\" data-end=\"1242\">\n<p data-start=\"1211\" data-end=\"1242\">512-reading internal memory<\/p>\n<\/li>\n<li data-start=\"1243\" data-end=\"1324\">\n<p data-start=\"1245\" data-end=\"1324\">Compatible with BenchVue Basic software for remote control and data logging<\/p>\n<\/li>\n<li data-start=\"1325\" data-end=\"1400\">\n<p data-start=\"1327\" data-end=\"1400\">SCPI command support for seamless integration into automated test systems<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1402\" data-end=\"1440\">Product Status &amp; Migration Path<\/h3>\n<ul data-start=\"1441\" data-end=\"1853\">\n<li data-start=\"1441\" data-end=\"1503\">\n<p data-start=\"1443\" data-end=\"1503\">The Keysight 34401A was discontinued on December 1, 2016<\/p>\n<\/li>\n<li data-start=\"1504\" data-end=\"1577\">\n<p data-start=\"1506\" data-end=\"1577\">Replaced by the next-generation <a href=\"https:\/\/techmaster.com.vn\/en\/dong-ho-van-nang-keysight-34461a\/\">Keysight 34461A<\/a> Truevolt Series DMM<\/p>\n<\/li>\n<li data-start=\"1578\" data-end=\"1650\">\n<p data-start=\"1580\" data-end=\"1650\">Keysight continues to provide standard product support for 5 years<\/p>\n<\/li>\n<li data-start=\"1651\" data-end=\"1853\">\n<p data-start=\"1653\" data-end=\"1753\">The 34461A is a 100% drop-in replacement, fully SCPI-compatible with the 34401A, while offering:<\/p>\n<ul data-start=\"1756\" data-end=\"1853\">\n<li data-start=\"1756\" data-end=\"1781\">\n<p data-start=\"1758\" data-end=\"1781\">Graphical color display<\/p>\n<\/li>\n<li data-start=\"1784\" data-end=\"1817\">\n<p data-start=\"1786\" data-end=\"1817\">Truevolt measurement technology<\/p>\n<\/li>\n<li data-start=\"1820\" data-end=\"1853\">\n<p data-start=\"1822\" data-end=\"1853\">LAN, USB, and GPIB connectivity<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3 data-start=\"1855\" data-end=\"1878\">Important Notice<\/h3>\n<p data-start=\"1879\" data-end=\"2083\">Counterfeit versions of this product have been identified in the market. To ensure genuine Keysight quality, performance, and reliability, purchase only from Keysight-authorized distribution partners.<\/p>\n<div class=\"kx tm-legacy-replacement\">\n<div class=\"block\">\n<div class=\"eyebrow\">Product status<\/div>\n<h2 id=\"chuyen-doi-34401a\">Migrating from the 34401A to a current configuration<\/h2>\n<p style=\"background:#FFF4E5;border:1px solid #F3C88F;border-radius:10px;padding:14px 16px;color:#5a4423\">Keysight has <strong>discontinued the 34401A<\/strong>. Techmaster keeps this page as a specification reference and to support installed units \u2014 <strong>ISO\/IEC 17025 calibration, repair and accessories<\/strong> remain fully available.<\/p>\n<p>According to Keysight&#8217;s official product page, the recommended replacement for <strong>34401A<\/strong> is:<\/p>\n<div class=\"cards\" style=\"grid-template-columns:repeat(2,minmax(0,1fr))\">\n<div class=\"card\" style=\"border-left:4px solid #C70032\">\n<h3 style=\"margin-bottom:6px\"><a href=\"https:\/\/techmaster.com.vn\/en\/dong-ho-van-nang-keysight-34461a\/\" style=\"color:#1B55A6\">Digital Multimeter &#8211; Keysight 34461A<\/a><\/h3>\n<p style=\"margin:0\">available from Techmaster.<\/p>\n<\/div>\n<div class=\"card\" style=\"border-left:4px solid #C70032\">\n<h3 style=\"margin-bottom:6px\"><a href=\"https:\/\/techmaster.com.vn\/en\/dong-ho-van-nang-keysight-34465a\/\" style=\"color:#1B55A6\">Digital Multimeter &#8211; Keysight 34465A<\/a><\/h3>\n<p style=\"margin:0\">available from Techmaster.<\/p>\n<\/div>\n<\/div>\n<p style=\"font-size:13px;color:#5b6b80;margin-top:14px\">Source: Keysight official product page \u2014 <a href=\"https:\/\/www.keysight.com\/us\/en\/product\/34401A\/digital-multimeter-6-digit.html\" target=\"_blank\" rel=\"noopener nofollow\" style=\"color:#1B55A6\">34401A<\/a> (\u201cReplacement Product\u201d section). Contact a Techmaster engineer on <strong>0908 173 345<\/strong> for migration advice.<\/p>\n<\/div>\n<\/div>\n<div class=\"tm-en-blocks\"><\/div>\n<div class=\"kx tm-ks-highlights\">\n<div class=\"block\">\n<div class=\"eyebrow\">Specifications<\/div>\n<h2 id=\"specs-34401a\">Keysight 34401A key features<\/h2>\n<ul>\n<li>6\u00bd digit resolution<\/li>\n<li>10 measurement functions: DC\/AC voltage, DC\/AC current, 2- and 4-wire resistance, diode, continuity, frequency, period<\/li>\n<li>Basic accuracy: 0.0035% DC, 0.06% AC<\/li>\n<li>1000 V max voltage input, 3 A max current input<\/li>\n<\/ul>\n<p style=\"font-size:13px;color:#5b6b80\">Source: official Keysight product page (https:\/\/www.keysight.com\/us\/en\/product\/34401A\/digital-multimeter-6-digit.html)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"kx\">\n<div class=\"block faq\">\n<div class=\"eyebrow\">Frequently asked questions<\/div>\n<h2 id=\"faq-34401a\">Keysight 34401A \u2014 frequently asked questions<\/h2>\n<details>\n<summary>Where can I buy a genuine Keysight 34401A in Vietnam?<\/summary>\n<div class=\"a\">Techmaster Electronics is an authorised Keysight Technologies distributor in Vietnam. We supply the Keysight 34401A Digital Multimeter as 100% genuine equipment with CO\/CQ documents, engineering advice and full lifecycle support. Call +84 908 173 345 for a quote.<\/div>\n<\/details>\n<details>\n<summary>How much does the Keysight 34401A cost?<\/summary>\n<div class=\"a\">The 34401A is configured to order, so options and accessories change the price and Techmaster quotes each requirement individually. Send your requirement at https:\/\/techmaster.com.vn\/en\/contact\/ or call +84 908 173 345 for a same-day quote.<\/div>\n<\/details>\n<details>\n<summary>Is the Keysight 34401A covered by warranty and calibration?<\/summary>\n<div class=\"a\">Yes. The Keysight 34401A Digital Multimeter carries the Keysight manufacturer warranty, and Techmaster provides ISO\/IEC 17025 calibration, repair and scheduled maintenance in Vietnam.<\/div>\n<\/details>\n<\/div>\n<div class=\"cta\">\n<h3>Request a quote for the Keysight 34401A Digital Multimeter<\/h3>\n<p>Techmaster engineers advise on the configuration and quote the same day.<\/p>\n<p><a class=\"b1\" href=\"tel:0908173345\">\ud83d\udcde +84 908 173 345<\/a><a class=\"b2\" href=\"https:\/\/techmaster.com.vn\/en\/contact\/\">Request a quote<\/a><\/p>\n<\/div>\n<\/div>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"@id\": \"https:\/\/techmaster.com.vn\/en\/keysight-34401a-digital-multimeter\/#faq\", \"inLanguage\": \"en-US\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Where can I buy a genuine Keysight 34401A in Vietnam?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Techmaster Electronics is an authorised Keysight Technologies distributor in Vietnam. We supply the Keysight 34401A Digital Multimeter as 100% genuine equipment with CO\/CQ documents, engineering advice and full lifecycle support. Call +84 908 173 345 for a quote.\"}}, {\"@type\": \"Question\", \"name\": \"How much does the Keysight 34401A cost?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 34401A is configured to order, so options and accessories change the price and Techmaster quotes each requirement individually. Send your requirement at https:\/\/techmaster.com.vn\/en\/contact\/ or call +84 908 173 345 for a same-day quote.\"}}, {\"@type\": \"Question\", \"name\": \"Is the Keysight 34401A covered by warranty and calibration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The Keysight 34401A Digital Multimeter carries the Keysight manufacturer warranty, and Techmaster provides ISO\/IEC 17025 calibration, repair and scheduled maintenance in Vietnam.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p style=\"background:#FFF4E5;border:1px solid #F3C88F;border-radius:8px;padding:10px 12px;margin:0 0 12px;color:#5a4423;font-size:14px\"><strong>\u26a0 This model has been discontinued.<\/strong> See the replacement configuration below.<\/p>\n<h3>Highlight<\/h3>\n<ul data-start=\"1158\" data-end=\"1400\">\n<li data-start=\"1158\" data-end=\"1208\">\n<p data-start=\"1160\" data-end=\"1208\">Measurement speed up to 1000 readings\/second<\/p>\n<\/li>\n<li data-start=\"1209\" data-end=\"1242\">\n<p data-start=\"1211\" data-end=\"1242\">512-reading internal memory<\/p>\n<\/li>\n<li data-start=\"1243\" data-end=\"1324\">\n<p data-start=\"1245\" data-end=\"1324\">Compatible with BenchVue Basic software for remote control and data logging<\/p>\n<\/li>\n<li data-start=\"1325\" data-end=\"1400\">\n<p data-start=\"1327\" data-end=\"1400\">SCPI command support for seamless integration into automated test systems<\/p>\n<\/li>\n<\/ul>\n","protected":false},"featured_media":266507,"comment_status":"open","ping_status":"closed","template":"","meta":{"_themeisle_gutenberg_block_has_review":false},"product_brand":[],"product_cat":[282,526],"product_tag":[],"class_list":{"0":"post-190425","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-multimeter","7":"product_cat-benchtop-multimeters","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Keysight 34401A Digital Multimeter | Techmaster<\/title>\n<meta name=\"description\" content=\"Keysight 34401A 6\u00bd digit digital multimeter delivers high accuracy DC\/AC measurements for lab, production, and automated test systems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/techmaster.com.vn\/en\/keysight-34401a-digital-multimeter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Keysight 34401A Digital Multimeter\" \/>\n<meta property=\"og:description\" content=\"Keysight 34401A 6\u00bd digit digital multimeter delivers high accuracy DC\/AC measurements for lab, production, and automated test systems.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/techmaster.com.vn\/en\/keysight-34401a-digital-multimeter\/\" \/>\n<meta property=\"og:site_name\" content=\"Techmaster Electronics JSC\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/techmaster.electronics.jsc\" 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