Solar Regulator 12/24V PWM Charger with USB Ports Manual
User manual for solar charge controller models NX-6815 and NX-6816. Covers installation, operation of the PWM charging module with dual USB ports (5V/2A max), settings and menus for 10A or 20A variants, operating modes, troubleshooting, and safety instructions. Includes technical specifications and control button functions.
