{"id":11943,"date":"2026-09-30T10:39:52","date_gmt":"2026-09-30T10:39:52","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=11943"},"modified":"2026-10-09T08:20:30","modified_gmt":"2026-10-09T08:20:30","slug":"mrcartool-b530-automotive-circuit-tester-with-led-display","status":"publish","type":"product","link":"https:\/\/autoboss.com\/de\/product\/mrcartool-b530-automotive-circuit-tester-with-led-display\/","title":{"rendered":"MRCARTOOL B530 9-30V Automotive Circuit Tester with LED Display &#038; 10 m Lead"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Probe Vehicle Circuits From Front to Rear Without Re-Clipping<\/h3>\n<p class=\"abd-lead\">The B530 connects to the vehicle battery once, then checks circuit polarity, voltage, resistance and diodes on 9\u201330 V systems, with a 10 m lead long enough to reach the rear of the vehicle.<\/p>\n<ul class=\"abd-facts\">\n<li>9\u201330 V Circuits<\/li>\n<li>4 Test Modes<\/li>\n<li>10 m Extension Lead<\/li>\n<li>Overload Cut-Off<\/li>\n<li>7 Languages<\/li>\n<\/ul>\n<\/header>\n<section class=\"abd-sec\" id=\"abd-features\">\n<h4>Key Features<\/h4>\n<ol class=\"abd-features\">\n<li>\n<h5>AC and DC Voltage<\/h5>\n<p>DC mode reads the voltage of the circuit under test; AC mode shows the maximum and minimum voltage of the signal.<\/p>\n<\/li>\n<li>\n<h5>Resistance and Diode Tests<\/h5>\n<p>Measures resistance between the probe and the auxiliary ground, and quickly checks whether a diode is conducting.<\/p>\n<\/li>\n<li>\n<h5>Polarity and Continuity in One Hookup<\/h5>\n<p>After a single connection to the battery, check polarity and continuity without moving the clips again.<\/p>\n<\/li>\n<li>\n<h5>Component Activation<\/h5>\n<p>Activate components directly from the probe to check their operation.<\/p>\n<\/li>\n<li>\n<h5>Overload and Short-Circuit Protection<\/h5>\n<p>On current overload the tester automatically disconnects its protection circuit.<\/p>\n<\/li>\n<li>\n<h5>Built-In Flashlight<\/h5>\n<p>A light at the probe tip helps you test in dark areas.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec abd-hls\" id=\"abd-highlights\">\n<h4>Highlights<\/h4>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/feebefcac1a83e7b93863ebb.jpg\" alt=\"Technician using the B530 at the rear of an SUV with the 10 m extension lead\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Reach the Whole Vehicle<\/h5>\n<p>The extension lead covers the vehicle from front to rear, so you can work through the entire circuit system.<\/p>\n<\/figcaption><\/figure>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/e271dd04cc2aaf42e008c247.jpg\" alt=\"B530 powered from a cigarette lighter socket or car battery\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Two Power Options<\/h5>\n<p>Power the tester from the car battery with clips or from the cigarette lighter socket.<\/p>\n<\/figcaption><\/figure>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/06000bc72897c769cb8bec69.jpg\" alt=\"B530 probe tip light illuminating a connector\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Light at the Tip<\/h5>\n<p>Illuminates connectors and pins while you probe in dark spaces.<\/p>\n<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-compare\">\n<h4>B530 vs B550<\/h4>\n<div class=\"abd-table-wrap\">\n<table class=\"abd-table abd-compare\">\n<thead>\n<tr>\n<th scope=\"col\"><\/th>\n<th scope=\"col\" class=\"is-current\">B530<\/th>\n<th scope=\"col\">B550<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Multimeter mode<\/th>\n<td class=\"is-current\">No<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Oscilloscope mode<\/th>\n<td class=\"is-current\">No<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">0\u20135 V power supply<\/th>\n<td class=\"is-current\">No<\/td>\n<td>Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Languages<\/th>\n<td class=\"is-current\">7<\/td>\n<td>13<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Supported battery<\/th>\n<td class=\"is-current\">12 V \/ 24 V<\/td>\n<td>12 V \/ 24 V<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Extension cable<\/th>\n<td class=\"is-current\">10 m<\/td>\n<td>10 m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-box\">\n<h4>What&#8217;s in the Box<\/h4>\n<ul class=\"abd-box\">\n<li>B530 main unit<\/li>\n<li>10 m extension cable<\/li>\n<li>Battery hookup clips<\/li>\n<li>Cigarette lighter adapter<\/li>\n<li>Storage bag<\/li>\n<li>User manual<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/7c3f68ee336c4cc566752852.jpg\" alt=\"B530 main unit, extension cable, battery clips, cigarette lighter adapter, storage bag and manual\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>B530 kit contents.<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-notes\">\n<h4>Good to Know<\/h4>\n<div class=\"abd-notes\">\n<div class=\"abd-note-group is-caution\">\n<h5><span class=\"abd-tag\">Caution<\/span><\/h5>\n<ul>\n<li>Do not connect or disconnect test equipment while the ignition is on or the engine is running.<\/li>\n<li>The ignition coil, distributor cap, ignition wires and spark plugs carry dangerously high voltage with the engine running.<\/li>\n<li>Before testing, put an automatic transmission in Park or a manual in Neutral and apply the handbrake.<\/li>\n<\/ul>\n<\/div>\n<div class=\"abd-note-group is-care\">\n<h5><span class=\"abd-tag\">Care<\/span><\/h5>\n<ul>\n<li>Keep clothing, hair, hands and test equipment away from moving or hot parts.<\/li>\n<li>Keep a fire extinguisher at hand when working around gasoline, chemicals or electrical equipment.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Ultra Extension Inspection Cable 10m:<\/strong> Covering from the front to the rear of the vehicle<\/li>\n<li><strong>AC &amp; DC Voltage Detection Mode:<\/strong> AC detects the maximum and minimum voltage, supply frequency<\/li>\n<li><strong>Warranty:<\/strong> MRCARTOOL provides 24 months warranty and 7\u00d724 hours friendly customer service to ensure your shopping experience..<a href=\"https:\/\/api.whatsapp.com\/send\/?phone=%2B8618923768146&amp;text=onlinesupport\"><span style=\"color: #d83131\"><strong>Online Support&gt;&gt;<\/strong><\/span><\/a><\/li>\n<\/ul>","protected":false},"featured_media":12309,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[126],"product_cat":[51],"product_tag":[],"class_list":["post-11943","product","type-product","status-publish","has-post-thumbnail","product_brand-mrcartool","product_cat-automotive-electronic-circuit-inspection","first","instock","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product\/11943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/comments?post=11943"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media\/12309"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/media?parent=11943"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_brand?post=11943"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_cat?post=11943"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/de\/wp-json\/wp\/v2\/product_tag?post=11943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}