This product bundle features four quantities of a cost saving and power enhancing device that puts more power in your hands. You can reduce power consumption by heating appliances on your generator and your prepaid meter by using this optimizer socket at your power outlets. You can use it with a 1000W iron on your small domestic generator. You can use it to reduce loading effect on both your generator and your prepaid meter. When an appliance is plugged through it, the socket delivers 60% of the power the appliance will draw when plugged to a normal socket and thus saves you 40% power. Does not work with power sensitive appliances. Please have a good knowledge of your appliance power rating and characteristics before you order.