{"product_id":"🔧-2-in-1-automotive-circuit-relay-tester-12v-24v","title":"🔧 2-in-1 Automotive Circuit \u0026 Relay Tester – 12V\/24V","description":"\u003c!-- Paste this complete fragment into the Shopify product description HTML editor. --\u003e\n\u003cdiv class=\"rtp\" style=\"max-width:980px;margin:0 auto;color:#17212b;font-family:Arial,Helvetica,sans-serif;line-height:1.6;\"\u003e\n  \u003cstyle\u003e\n    .rtp,.rtp *{box-sizing:border-box;}\n    .rtp img{display:block;width:100%;height:auto;}\n    .rtp .rt-row{display:flex;flex-wrap:wrap;gap:16px;}\n    .rtp .rt-card{flex:1 1 240px;min-width:0;}\n    .rtp .rt-half{flex:1 1 320px;min-width:0;}\n    .rtp .rt-section{margin:24px 0;}\n    .rtp h2,.rtp h3,.rtp p{font-family:Arial,Helvetica,sans-serif;letter-spacing:normal;text-transform:none;}\n    .rtp details summary{cursor:pointer;}\n    @media(max-width:540px){.rtp .rt-pad{padding:24px!important;}.rtp .rt-title{font-size:30px!important;}.rtp .rt-section{margin:18px 0;}}\n  \u003c\/style\u003e\n\n  \u003csection style=\"background:#111820;color:#ffffff;border-radius:24px;overflow:hidden;box-shadow:0 10px 28px rgba(17,24,32,0.12);\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-01-hero.png?v=1791296183\" alt=\"Red automotive circuit and relay tester with battery leads\" loading=\"eager\"\u003e\n    \u003cdiv class=\"rt-pad\" style=\"padding:32px;color:#ffffff;\"\u003e\n      \u003cp style=\"margin:0 0 12px;color:#ffd8d8;font-size:12px;font-weight:800;letter-spacing:2px;\"\u003eYOUR NEXT GARAGE CHECK STARTS HERE\u003c\/p\u003e\n      \u003ch2 class=\"rt-title\" style=\"margin:0 0 16px;color:#ffffff;font-size:38px;font-weight:800;line-height:1.12;\"\u003eCheck the circuit.\u003cbr\u003eThen make your next move.\u003c\/h2\u003e\n      \u003cp style=\"margin:0 0 20px;color:#e5ecf2;font-size:17px;\"\u003eGet a voltage reading, check polarity and run basic checks on compatible automotive relays with one handheld tool. A practical addition for mechanics and experienced garage DIYers.\u003c\/p\u003e\n      \u003cdiv class=\"rt-row\" style=\"gap:10px;\"\u003e\n        \u003cspan style=\"display:inline-block;background:#8e1d2b;color:#ffffff;padding:9px 14px;border-radius:30px;font-size:13px;font-weight:700;\"\u003e12V \/ 24V vehicle power\u003c\/span\u003e\n        \u003cspan style=\"display:inline-block;background:#263542;color:#ffffff;padding:9px 14px;border-radius:30px;font-size:13px;font-weight:700;\"\u003eDigital voltage display\u003c\/span\u003e\n        \u003cspan style=\"display:inline-block;background:#263542;color:#ffffff;padding:9px 14px;border-radius:30px;font-size:13px;font-weight:700;\"\u003eCompatible 4 \/ 5-pin relays\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-pad\" style=\"background:#f5f2eb;padding:30px;border-radius:24px;color:#17212b;\"\u003e\n    \u003cp style=\"margin:0 0 7px;color:#8e1d2b;font-size:12px;letter-spacing:2px;font-weight:800;\"\u003eCHECK BEFORE YOU REPLACE\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 20px;font-size:28px;line-height:1.2;color:#17212b;\"\u003eMore useful clues. Less guesswork.\u003c\/h2\u003e\n    \u003cdiv class=\"rt-row\"\u003e\n      \u003cdiv class=\"rt-card\" style=\"background:#ffffff;color:#17212b;border-radius:18px;padding:22px;box-shadow:0 4px 14px rgba(17,24,32,0.05);\"\u003e\n        \u003cp style=\"margin:0 0 9px;font-size:12px;font-weight:800;color:#8e1d2b;\"\u003e01 \/ VOLTAGE\u003c\/p\u003e\n        \u003ch3 style=\"margin:0 0 9px;color:#17212b;font-size:20px;\"\u003eRead the number.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eThe digital display adds a voltage reading to your electrical checks, giving you another clue when tracing a circuit.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"rt-card\" style=\"background:#ffffff;color:#17212b;border-radius:18px;padding:22px;box-shadow:0 4px 14px rgba(17,24,32,0.05);\"\u003e\n        \u003cp style=\"margin:0 0 9px;font-size:12px;font-weight:800;color:#8e1d2b;\"\u003e02 \/ POLARITY\u003c\/p\u003e\n        \u003ch3 style=\"margin:0 0 9px;color:#17212b;font-size:20px;\"\u003eSee the signal.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eRed indicates positive; green indicates negative or ground. Use the reading together with the correct circuit conditions.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"rt-card\" style=\"background:#ffffff;color:#17212b;border-radius:18px;padding:22px;box-shadow:0 4px 14px rgba(17,24,32,0.05);\"\u003e\n        \u003cp style=\"margin:0 0 9px;font-size:12px;font-weight:800;color:#8e1d2b;\"\u003e03 \/ RELAYS\u003c\/p\u003e\n        \u003ch3 style=\"margin:0 0 9px;color:#17212b;font-size:20px;\"\u003eCheck the relay.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eBuilt-in sockets support basic checks on compatible 4- and 5-pin automotive relays. Match the pin layout and rated voltage first.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section\" style=\"border-radius:24px;overflow:hidden;background:#111820;color:#ffffff;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-02-garage.png?v=1791295777\" alt=\"Experienced garage DIYer with the automotive circuit tester\" loading=\"lazy\"\u003e\n    \u003cdiv class=\"rt-pad\" style=\"padding:28px;color:#ffffff;\"\u003e\n      \u003ch2 style=\"margin:0 0 12px;font-size:28px;line-height:1.2;color:#ffffff;\"\u003eA place on your workbench.\u003c\/h2\u003e\n      \u003cp style=\"margin:0;color:#e5ecf2;font-size:16px;\"\u003eA light or horn stopped working? Start with the relevant electrical checks. The probe, display and battery-clamp leads keep the essentials together while you follow the vehicle's repair procedure.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-row\"\u003e\n    \u003cdiv class=\"rt-half\" style=\"border-radius:22px;overflow:hidden;background:#f5f2eb;color:#17212b;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-04-polarity.png?v=1791295808\" alt=\"Positive and negative indicator information on the real red circuit tester\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"padding:22px;color:#17212b;\"\u003e\n        \u003ch3 style=\"margin:0 0 10px;font-size:21px;color:#17212b;\"\u003ePolarity at a glance.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eUse the red and green indicators alongside the voltage reading to help identify the circuit's power or ground condition.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"rt-half\" style=\"border-radius:22px;overflow:hidden;background:#f5f2eb;color:#17212b;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-05-digital-display.png?v=1791295952\" alt=\"Close-up of the digital voltage display and probe\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"padding:22px;color:#17212b;\"\u003e\n        \u003ch3 style=\"margin:0 0 10px;font-size:21px;color:#17212b;\"\u003eA reading you can work with.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eThe screen shows voltage directly. Readings depend on the vehicle and test point; interpret them using the relevant service information.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-row\"\u003e\n    \u003cdiv class=\"rt-half\" style=\"border-radius:22px;overflow:hidden;background:#111820;color:#ffffff;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-03-relay-checks.png?v=1791295796\" alt=\"Circuit tester beside compatible four- and five-pin automotive relays\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"padding:24px;color:#ffffff;\"\u003e\n        \u003ch3 style=\"margin:0 0 12px;font-size:22px;color:#ffffff;\"\u003eBasic relay checks, kept close.\u003c\/h3\u003e\n        \u003cp style=\"margin:0 0 12px;color:#e5ecf2;font-size:15px;\"\u003eSelect the correct 4- or 5-pin mode and follow the instructions for the compatible relay's voltage and pin arrangement.\u003c\/p\u003e\n        \u003cp style=\"margin:0;background:#263542;color:#ffffff;padding:14px;border-radius:14px;font-size:14px;\"\u003eA relay click alone does not prove contact performance under load. Additional load or voltage-drop checks may still be needed.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"rt-half\" style=\"border-radius:22px;overflow:hidden;background:#f5f2eb;color:#17212b;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-06-fuse-checks.png?v=1791295821\" alt=\"Automotive tester and blade fuses shown as garage maintenance context\" loading=\"lazy\"\u003e\n      \u003cdiv style=\"padding:24px;color:#17212b;\"\u003e\n        \u003ch3 style=\"margin:0 0 12px;font-size:22px;color:#17212b;\"\u003eStart with the right test point.\u003c\/h3\u003e\n        \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003eCheck the appropriate powered fuse test points and compare circuit conditions. An unpowered circuit can change how you interpret the result.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-pad\" style=\"padding:30px;background:#fff0ed;color:#17212b;border-radius:24px;\"\u003e\n    \u003cp style=\"margin:0 0 8px;font-size:12px;letter-spacing:2px;font-weight:800;color:#7b2330;\"\u003eADVANCED FUNCTION \/ KNOW THE CIRCUIT\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 12px;font-size:27px;line-height:1.2;color:#17212b;\"\u003ePower output for suitable component checks.\u003c\/h2\u003e\n    \u003cp style=\"margin:0 0 16px;font-size:16px;color:#42505b;\"\u003eThe polarity switch can provide power or ground for suitable component testing when used according to the product instructions and vehicle repair information.\u003c\/p\u003e\n    \u003cp style=\"margin:0;padding:16px;background:#ffffff;color:#7b2330;font-weight:700;font-size:14px;border-radius:16px;\"\u003eUse only on appropriate low-voltage DC vehicle circuits. Do not inject power into airbags, ECU connections, sensitive sensors or communication circuits. This is not a household AC tester.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section\" style=\"background:#f5f2eb;color:#17212b;border-radius:24px;overflow:hidden;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-07-kit-contents.png?v=1791295831\" alt=\"Included circuit and relay tester, battery leads, clamps and auxiliary probe\" loading=\"lazy\"\u003e\n    \u003cdiv class=\"rt-pad\" style=\"padding:30px;color:#17212b;\"\u003e\n      \u003cp style=\"margin:0 0 8px;color:#8e1d2b;font-size:12px;letter-spacing:2px;font-weight:800;\"\u003eKEEP THE ESSENTIALS TOGETHER\u003c\/p\u003e\n      \u003ch2 style=\"margin:0 0 18px;color:#17212b;font-size:28px;line-height:1.2;\"\u003eYour circuit-checking kit.\u003c\/h2\u003e\n      \u003cdiv class=\"rt-row\"\u003e\n        \u003cdiv class=\"rt-half\" style=\"color:#17212b;\"\u003e\n          \u003ch3 style=\"margin:0 0 10px;color:#17212b;font-size:20px;\"\u003eIncluded\u003c\/h3\u003e\n          \u003cul style=\"margin:0;padding-left:20px;color:#42505b;font-size:15px;\"\u003e\n            \u003cli style=\"margin-bottom:8px;\"\u003eRed circuit + relay tester\u003c\/li\u003e\n            \u003cli style=\"margin-bottom:8px;\"\u003eAttached lead with red and black battery clamps\u003c\/li\u003e\n            \u003cli\u003eAuxiliary probe lead\u003c\/li\u003e\n          \u003c\/ul\u003e\n          \u003cp style=\"margin:12px 0 0;color:#42505b;font-size:13px;\"\u003eRelays, fuses, vehicles and other workshop items shown in scenes are for demonstration.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rt-half\" style=\"padding:20px;background:#ffffff;color:#17212b;border-radius:18px;\"\u003e\n          \u003ch3 style=\"margin:0 0 12px;color:#17212b;font-size:20px;\"\u003eQuick fit check\u003c\/h3\u003e\n          \u003cp style=\"margin:0 0 10px;color:#42505b;font-size:15px;\"\u003e\u003cstrong style=\"color:#17212b;\"\u003eVehicle power:\u003c\/strong\u003e compatible 12V \/ 24V DC battery systems.\u003c\/p\u003e\n          \u003cp style=\"margin:0 0 10px;color:#42505b;font-size:15px;\"\u003e\u003cstrong style=\"color:#17212b;\"\u003eListed circuit range:\u003c\/strong\u003e DC 3.5–36V. This is the stated test range, not the required power supply.\u003c\/p\u003e\n          \u003cp style=\"margin:0 0 10px;color:#42505b;font-size:15px;\"\u003e\u003cstrong style=\"color:#17212b;\"\u003eRelay support:\u003c\/strong\u003e compatible standard 4 \/ 5-pin layouts; match the relay rating.\u003c\/p\u003e\n          \u003cp style=\"margin:0;color:#42505b;font-size:15px;\"\u003e\u003cstrong style=\"color:#17212b;\"\u003eColor:\u003c\/strong\u003e Red.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-pad\" style=\"padding:30px;background:#111820;color:#ffffff;border-radius:24px;\"\u003e\n    \u003cp style=\"margin:0 0 8px;color:#ffd8d8;font-size:12px;font-weight:800;letter-spacing:2px;\"\u003eA SIMPLE CHECKING ROUTINE\u003c\/p\u003e\n    \u003ch2 style=\"margin:0 0 18px;font-size:28px;color:#ffffff;line-height:1.2;\"\u003eConnect. Choose. Check.\u003c\/h2\u003e\n    \u003cdiv class=\"rt-row\"\u003e\n      \u003cdiv class=\"rt-card\" style=\"padding:18px;background:#263542;color:#ffffff;border-radius:16px;\"\u003e\n        \u003ch3 style=\"margin:0 0 8px;font-size:18px;color:#ffffff;\"\u003e1 \/ Connect correctly\u003c\/h3\u003e\n        \u003cp style=\"margin:0;font-size:14px;color:#e5ecf2;\"\u003eConfirm the supply voltage, secure the battery leads and follow the instructions.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"rt-card\" style=\"padding:18px;background:#263542;color:#ffffff;border-radius:16px;\"\u003e\n        \u003ch3 style=\"margin:0 0 8px;font-size:18px;color:#ffffff;\"\u003e2 \/ Choose the check\u003c\/h3\u003e\n        \u003cp style=\"margin:0;font-size:14px;color:#e5ecf2;\"\u003eUse the correct circuit procedure or relay mode. Check the relay rating and pin layout.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"rt-card\" style=\"padding:18px;background:#263542;color:#ffffff;border-radius:16px;\"\u003e\n        \u003ch3 style=\"margin:0 0 8px;font-size:18px;color:#ffffff;\"\u003e3 \/ Read in context\u003c\/h3\u003e\n        \u003cp style=\"margin:0;font-size:14px;color:#e5ecf2;\"\u003eInterpret the display and indicators with the circuit conditions and service information.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section rt-pad\" style=\"padding:28px;background:#f5f2eb;color:#17212b;border-radius:24px;\"\u003e\n    \u003ch2 style=\"margin:0 0 16px;font-size:27px;color:#17212b;\"\u003eBefore you add it to your toolkit.\u003c\/h2\u003e\n    \u003cdetails style=\"margin-bottom:12px;background:#ffffff;border-radius:16px;padding:18px;color:#17212b;\"\u003e\n      \u003csummary style=\"font-weight:700;color:#17212b;\"\u003eWill it read engine fault codes?\u003c\/summary\u003e\n      \u003cp style=\"margin:12px 0 0;color:#42505b;font-size:15px;\"\u003eIt is a low-voltage electrical circuit tester, not an OBD scanner. It does not scan or clear engine fault codes.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin-bottom:12px;background:#ffffff;border-radius:16px;padding:18px;color:#17212b;\"\u003e\n      \u003csummary style=\"font-weight:700;color:#17212b;\"\u003eWill every automotive relay fit?\u003c\/summary\u003e\n      \u003cp style=\"margin:12px 0 0;color:#42505b;font-size:15px;\"\u003eNo. Check the relay's 4- or 5-pin layout and rated voltage before use. Different relay types or pin arrangements may need another testing method.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"background:#ffffff;border-radius:16px;padding:18px;color:#17212b;\"\u003e\n      \u003csummary style=\"font-weight:700;color:#17212b;\"\u003eWho is this tool for?\u003c\/summary\u003e\n      \u003cp style=\"margin:12px 0 0;color:#42505b;font-size:15px;\"\u003eMechanics and experienced DIYers familiar with vehicle electrical systems. Learn the product instructions before using the output function.\u003c\/p\u003e\n    \u003c\/details\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"rt-section\" style=\"border-radius:24px;overflow:hidden;background:#8e1d2b;color:#ffffff;\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-08-vehicle-systems.png?v=1791295841\" alt=\"12V and 24V low-voltage vehicle use context for the circuit tester\" loading=\"lazy\"\u003e\n    \u003cdiv class=\"rt-pad\" style=\"padding:32px;text-align:center;color:#ffffff;\"\u003e\n      \u003ch2 style=\"margin:0 0 12px;font-size:29px;line-height:1.2;color:#ffffff;\"\u003eReady for your next electrical check?\u003c\/h2\u003e\n      \u003cp style=\"margin:0;color:#ffffff;font-size:16px;\"\u003eMake room for a practical circuit + relay tester on your workbench. Select your option above and add it to your garage toolkit.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\u003c\/div\u003e\n","brand":"痞老板","offers":[{"title":"Red","offer_id":68011088609431,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/5016\/9239\/files\/circuit-relay-01-hero.png?v=1791296183","url":"https:\/\/thenuvaro.com\/products\/%f0%9f%94%a7-2-in-1-automotive-circuit-relay-tester-12v-24v","provider":"thenuvaro.com","version":"1.0","type":"link"}