METERK FNIRSI-C1 USB Tester BT Voltmeter Ammeter User Manual
Learn how to use the METERK FNIRSI-C1 USB Tester BT Voltmeter Ammeter with this comprehensive user manual. Get detailed information on the device's functions and safety precautions to avoid common abnormalities. Discover how to use this high-reliability, high-safety USB voltage and current meter for measuring power supply, mobile charging power, and fast charging protocols. Stay updated with the latest version and updates by visiting the official website.