{"product_id":"dc-dual-digital-voltmeter-ammeter-10a-50a-100a-led-display-0-100v","title":"DC Digital Voltmeter Ammeter 10A\/50A\/100A LED Display 0-100V","description":"\n\u003ch2\u003eDC Dual Digital Voltmeter Ammeter – LED Display, 10A \/ 50A \/ 100A\u003c\/h2\u003e\n\u003cp\u003eMonitor DC voltage and current simultaneously with this compact, easy-to-read dual LED display meter. Whether you're working on electroplating setups, DC power control projects, battery testing, or DIY electronics, this voltmeter ammeter combo gives you accurate, real-time readings at a glance. The bright blue and red 0.28\" digital tube display makes values easy to read even in dimly lit workspaces.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual display:\u003c\/strong\u003e Simultaneously shows voltage (blue) and current (red) readings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree current range options:\u003c\/strong\u003e 10A (no shunt), 50A (shunt included), or 100A (shunt included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide voltage measurement range:\u003c\/strong\u003e DC 0–100V with 0.1V resolution\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh accuracy:\u003c\/strong\u003e 1% (±1 digit) measurement accuracy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast refresh rate:\u003c\/strong\u003e ~300ms per reading cycle for near-real-time monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact form factor:\u003c\/strong\u003e ~48 × 29 × 26 mm — easy to integrate into panels or enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow power consumption:\u003c\/strong\u003e Instrument working current ≤20mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.28\" dual LED digital tube (blue + red)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 4–30V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤20mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 0–100V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 0–10A \/ 0–50A \/ 0–100A (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1% (±1 digit)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRefresh Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~300ms\/cycle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~48 × 29 × 26 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Wiring Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThe \u003cstrong\u003e50A and 100A kits include a shunt\u003c\/strong\u003e; the 10A kit does not require one.\u003c\/li\u003e\n  \u003cli\u003eFor 50A or 100A models, the shunt \u003cstrong\u003emust always be connected\u003c\/strong\u003e to measure current — even when the actual current is under 10A. Failure to connect the shunt will damage the meter.\u003c\/li\u003e\n  \u003cli\u003eMaximum input voltage to the instrument must \u003cstrong\u003enot exceed 30V\u003c\/strong\u003e on the power supply wires.\u003c\/li\u003e\n  \u003cli\u003eConnect the thick black wire to the \u003cstrong\u003enegative pole of the power source\u003c\/strong\u003e, and the thick red wire to the \u003cstrong\u003enegative pole of the load\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eAll rectified AC power supplies must be filtered with an electrolytic capacitor of \u003cstrong\u003e1000µF or higher\u003c\/strong\u003e before powering the meter.\u003c\/li\u003e\n  \u003cli\u003eIf the current display shows 0.00 or 0.0 with correct voltage, recheck wiring — this is almost always a connection issue, not a faulty meter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Dual LED Voltmeter Ammeter\u003c\/li\u003e\n  \u003cli\u003e1× Shunt (included with 50A and 100A models only — not included with 10A)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the 10A voltmeter ammeter come with a shunt?\u003c\/h4\u003e\n\u003cp\u003eA: No — the 10A model does not require or include a shunt. The 50A and 100A models both include a shunt, which must be connected at all times when measuring current with those ranges.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power supply does the meter itself need to operate?\u003c\/h4\u003e\n\u003cp\u003eA: The instrument requires a DC working voltage of 4–30V and draws no more than 20mA. Do not exceed 30V on the meter's supply wires, or the unit may be damaged.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why is the current showing 0.00 even though voltage displays correctly?\u003c\/h4\u003e\n\u003cp\u003eA: This is almost always a wiring issue. For 50A and 100A models, verify that the shunt is properly connected. Also confirm that the thick black wire goes to the negative pole of the power source and the thick red wire to the negative pole of the load. Carefully re-checking all connections resolves this in the vast majority of cases.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this meter be used for both charging and discharging applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. However, the wiring method differs depending on whether the device acts as a power source (e.g., charger, solar panel) or a load (e.g., battery, motor). Refer to the wiring diagram and the concepts of \"load\" and \"power source\" provided with the unit to ensure correct installation for your specific use case.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the 10A voltmeter ammeter come with a shunt?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — the 10A model does not require or include a shunt. 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Refer to the wiring diagram and the concepts of \\\"load\\\" and \\\"power source\\\" provided with the unit to ensure correct installation for your specific use case.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"DC Digital Voltmeter Ammeter 10A\/50A\/100A LED Display 0-100V\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/dc-dual-digital-voltmeter-ammeter-10a-50a-100a-led-display-0-100v\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"10A \/ China Mainland","offer_id":44129743470679,"sku":"200007763:201336100;35:203032829#10A","price":10.27,"currency_code":"USD","in_stock":true},{"title":"50A \/ China Mainland","offer_id":44129743503447,"sku":"200007763:201336100;35:203032830#50A","price":20.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/Saa38fd6c0a824d9bace2319e912886238.webp?v=1786390407","url":"https:\/\/axlcustomersupport.com\/products\/dc-dual-digital-voltmeter-ammeter-10a-50a-100a-led-display-0-100v","provider":"Axl","version":"1.0","type":"link"}