Solar Pumping system becomes more and more popular, it can be applied to daily (underground water), agriculture irrigation, desert control, pasture animal husbandry, water supply for islands, wastewater treatment engineering , and so on.In recent years, with the Promotions of themore...
This small day night switch can switch on any Electrical device automatically when Dark falls and switch off in the morning automatically. A day/night switches outdoor lighting on and off automatically. It consists of a light-sensitive element that registers the brilliance of themore...