The is compatible with Tuya APP intelligent control, saving energy and saving electricity Smart Monitor on Electrical Values with Surge Protection Auto Distinguish with Adjustable Set-points and AC Test Bigger Power:Updated rated power:8KW(110V) or 16KW(220V) and 80A,Large LCD screen is designed to display voltage and working status On cloudy or windless days when your battery gets low,it will automatically switch to grid power to protect your battery,especially for the condition that when battery voltage is lower than cut off point,it will automatically switch back to battery power when the battery voltage is higher than recovery point,working like an opposite direction UPS with the updated manual switch function for your convenience.