The 5-Second Trick For solar power fan for home
During the night, photoresistors detect the absence of ambient light and switch on the units. The light stays on till the batteries operate out or even the photoresistors detect light in the morning.Within a quite simple instance, say you have a sixty-watt lightbulb. Maintaining this bulb lit for an hour would just take 60 watt-hrs of energy. In th