{"product_id":"usb-volt-amp-meter-dual-digital-display-voltage-current-tester","title":"USB Volt Amp Meter – Dual Digital Display Voltage Tester","description":"\n\u003ch2\u003eMonitor Your USB Power with Precision\u003c\/h2\u003e\n\u003cp\u003eThe KOQZM USB Voltage \u0026amp; Current Tester gives you instant, accurate readings of voltage, current, power, and more — right from your USB port. Whether you're an electronics enthusiast, hardware engineer, or simply want to verify your phone charger is performing correctly, this compact plug-and-play meter delivers professional-grade data in the palm of your hand. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy Dual Digital Display:\u003c\/strong\u003e Simultaneously shows voltage and current with ±1% error margin, giving you reliable real-time readings at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Function Testing:\u003c\/strong\u003e Goes beyond basic volt\/amp measurement — also tests temperature, power supply output, resistance, and capacitance. One tool for a wide range of diagnostic needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug \u0026amp; Play Convenience:\u003c\/strong\u003e No software, no setup, no complicated menus. Simply plug it into any USB port and get instant readings. Intuitive user interface for beginners and pros alike.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with USB-A and USB-C interfaces and supports fast-charging protocols including QC2.0, QC3.0, and USB Power Delivery (PD) — compatible with Android phones, iPhones, tablets, laptops, power banks, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Portable:\u003c\/strong\u003e Lightweight, pocket-sized design makes it easy to carry in a tool bag, backpack, or laptop case for use at home, in the lab, or on the go.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest Voltage Range:\u003c\/strong\u003e 3V – 8V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest Current Range:\u003c\/strong\u003e 0A – 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Error:\u003c\/strong\u003e ±1%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupported Protocols:\u003c\/strong\u003e QC2.0 \/ QC3.0 \/ USB-PD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Dual Digital LCD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × USB Volt\/Amp Meter Tester\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products You May Like\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/038-inch-1280x720p-micro-display-diy-hdmi-driver-board-kit\"\u003e0.38\" 1280x720P Micro Display DIY Kit with HDMI Driver Board\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-25mm-1000-turn-precision-copper-inductor-coil-diy-electronics\"\u003e0.25mm 1000-Turn Precision Copper Inductor Coil for DIY Circuits\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on USB charging standards and electrical safety for consumer electronics, visit the U.S. Consumer Product Safety Commission – Electrical Safety Resource Center.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Multimeter\" target=\"_blank\" rel=\"noopener\"\u003eMultimeter\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices is this USB voltage and current tester compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This USB volt amp meter is compatible with a wide range of devices including Android phones, iPhones, tablets, laptops, power banks, and any device that charges via USB. It supports fast-charging protocols QC2.0, QC3.0, and USB Power Delivery (PD), making it highly versatile for modern electronics.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any special software or setup to use this USB power tester?\u003c\/h4\u003e\n\u003cp\u003eA: No setup is required. The tester features a true plug-and-play design — simply insert it between your charger and device. The dual digital display instantly shows live voltage and current readings without any app, driver, or configuration needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What parameters can this tester measure beyond voltage and current?\u003c\/h4\u003e\n\u003cp\u003eA: In addition to voltage (3V–8V) and current (0A–3A), this multi-function tester can also measure temperature, power supply output, resistance, and capacitance — making it a comprehensive diagnostic tool for electronics enthusiasts, engineers, and lab technicians.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices is this USB voltage and current tester compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This USB volt amp meter is compatible with a wide range of devices including Android phones, iPhones, tablets, laptops, power banks, and any device that charges via USB. 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