{"product_id":"mini-0-28-inch-3-wire-red-led-digital-voltmeter-dc-0-100v","title":"Mini 0.28 inch 3-Wire Red LED Digital Voltmeter (DC 0-100V)","description":"\u003cp\u003eMonitor your power with absolute precision using our Mini 0.28 inch 3-Wire Red LED Digital Voltmeter. Designed for maximum versatility in tight spaces, this ultra-compact voltage display panel reads from DC 0V to 100V with crisp, high-brightness red visibility.\u003c\/p\u003e\n\u003cp\u003eUnlike standard 2-wire meters that shut off at low voltages, the advanced 3-wire configuration utilizes an independent power line. This enables the meter to measure voltage all the way down to 0V absolute zero—making it the ultimate diagnostic tool for low-voltage circuits, battery cells, and custom electronics.\u003c\/p\u003e\n\u003cp\u003eFeaturing built-in reverse polarity protection and a smart, self-adjusting decimal point for maximum resolution, it delivers professional-grade accuracy in a microscopic footprint.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e DC 0.00V – 100.0V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage (Power Input):\u003c\/strong\u003e DC 4.0V – 30.0V (Red wire)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay Type:\u003c\/strong\u003e Three 0.28-inch digital LED tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay Color:\u003c\/strong\u003e High-visibility Red\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Accuracy:\u003c\/strong\u003e ±1% (Auto-shifting decimal point: 2 decimals below 10V, 1 decimal above 10V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefresh Rate:\u003c\/strong\u003e Approximately 300ms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e \u0026gt;100KΩ\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Current:\u003c\/strong\u003e \u0026lt;20mA (Ultra-low consumption)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Wire Length:\u003c\/strong\u003e 15cm (approx. 6 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Feature:\u003c\/strong\u003e Reverse polarity burnout protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWiring Guide \u0026amp; Functionality\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1. Independent Power Source Mode (Measures 0V – 100V)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Wire (VCC):\u003c\/strong\u003e Connects to external power supply (+) [DC 4V – 30V]\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Wire (GND):\u003c\/strong\u003e Connects to system ground (-) [Common Negative]\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite\/Yellow Wire (VIN):\u003c\/strong\u003e Connects to the target voltage source (+) [DC 0V – 100V]\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e2. Self-Powered Mode (Measures 4V – 30V)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed \u0026amp; White\/Yellow Wires:\u003c\/strong\u003e Tied together and connected to the source (+)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Wire:\u003c\/strong\u003e Connected to the source (-)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLithium Battery Packs:\u003c\/strong\u003e Real-time monitoring of custom e-bike, drone, and power tool batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive Tech:\u003c\/strong\u003e Compact dash addition for cars, motorcycles, marine boats, and RVs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY Lab Benches:\u003c\/strong\u003e Easily add an affordable digital readout to any custom bench power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Power Systems:\u003c\/strong\u003e Keep visual track of low-voltage solar panels and charge controller outputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Mini 0.28\" 3-Wire Red LED Digital Voltmeter (DC 0-100V)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eNote: Image is for representation purpose only.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Circuitcomps","offers":[{"title":"Default Title","offer_id":47824050913457,"sku":"CC-001182","price":62.48,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/0937\/9249\/files\/Mini_0.28_inch_3-Wire_Red_LED_Digital_Voltmeter_DC_0-100V_1.png?v=1786102707","url":"https:\/\/circuitcomps.com\/products\/mini-0-28-inch-3-wire-red-led-digital-voltmeter-dc-0-100v","provider":"Circuitcomps","version":"1.0","type":"link"}