There are some restrictions to these particular person appliance monitors. You cannot use them for much larger 220v appliances like garments dryers and oven ranges. They are really only meant to be applied with smaller appliances like blenders or lights. 5 to three watts, depending on the manufacturer and model. https://raymonddtivk.mpeblog.com/54858581/save-money-with-energy-monitoring-benefits-things-to-know-before-you-buy