When we use the digital display voltage stabilizer will find the digital screen shows the "H"or "L", what does it mean? Now Let’s Gechy Electric Co.,Ltd explain the meaning.

Every AVR has a input voltage range, in Gechy AVR ranges, we offer an input range from 140~260V, 100~260V, 80~260V for different product families.

"H" means the input high voltage beyond the regulation range of the AVR;

You don’t have to do anything to the AVR if A"H"or A"L"is displayed, but to wait until the utility power resumes to the regulation range.