USB transparent blue radio voltmeter current charger capacity mobile power home smart timing test V20

• Transparent Blue USB Voltmeter: The transparent blue USB voltmeter allows easy and accurate voltage readings, making it ideal for DIY enthusiasts and professionals alike. • Current Capacity Charger Meter: With the ability to test current capacity, this charger meter is perfect for ensuring your batteries are charged correctly and efficiently. • Portable Smart Home Power Timing Tester V20: This product is not only versatile but also incredibly powerful, making it suitable for use in various settings such as smart homes, offices, and more. • DIY Carpentry Supplies: Whether you are a professional carpenter or just starting out, this battery tester is an essential tool to ensure your tools operate properly. Features: This is a small USB meter. It can display all data clearly. Easily measures device operating current and charging voltage output (PC USB, mobile phone charger, car charger, power bank, etc.), discharge capacity, performance, and evaluates charging equipment performance. The charging cable tester can meet these requirements! Suitable for factories, laboratories, and personal use, wide range, easy to use, no additional power supply needed, plug and play. Description: DIY supplies: electronic Type of display: digital only Accuracy class: plus or minus 1% Operating temperature: normal Power supply: AC Voltage: 4-20V +/-1% Current: 0-3A +/-1% Specifications: Model: our Materials: plastic Color: blue Size: 59*23*13.5 Product manuals 1.1N - Input terminal connected to charger output port 2. RTZ-zero button press for 3 seconds after display shows zero 3. Output terminal connected to USB data cable port 4. Input voltage display window (3-9V) with 1% accuracy 5. Current display window (0-3A) with 1% accuracy 6. Battery capacity display window (0-99999 mAh) 7. Operating time display window (0-99 hours) Unit: minutes 8. Operating time and capacity display with memory function after power outage.