Power Conservation & Electricity Usage Monitor Surge Protector - Reduce Your Energy Cost , Carbon Emission and Total Energy Usage for TVs , Computers , Tablets , Smartphones and Other Electronics Calculate your energy usage & costs and start saving on your monthly electricity bill Thanks to the included LED display, you'll be able to see accurate readings of your energy consumption, energy costs, and carbon emission Simple installation. Just plug the surge protector into any AC outlet, plug an appliance into the surge protector, and start seeing the statistics A timer control mode allows you to set up an hourly timer to automatically turn an outlet on or off, saving energy and money *For indoor use only. Surge protector must be plugged directly into power source and not other surge protectors or extension cords.