1.Change over switch,220V AC input 2.Input power:grid electricity,solar power,wind power,diesel generator. 3.7 sedonds delay 1.Change over switch applied in rated voltage AC70V-AC300V, 50/60Hz power supply system. 2.input state grid power, Solar power, Wind power, Diesel generator and related power resource. 3.When one side of the power failure, it will switch automatically between power supply ...