solar controller CE certification maximum efficiency with MCUand PWM special anti-reverse protect waterproof function ... , power full, power low, over-discharge, over load, out short circuit, load on/off, etc.Industry level production standard: wide ... short circuit protection action.No load current≤6mACharging circuit voltage drop≤0.26 VLoad circuit voltage drop≤0.15 VOver voltage protection17V, ×2 ...