Slashing down on your daily electricity consumption not only saves you money, but also lends a helping hand to save the planet. You at times may forget to switch of the lights, or moving from one room to other makes you lazy to turn off the light, Lutron will take care of everything. Lutron is a new design that cuts down the electricity bill by turning off the lights when not in need. It senses when one enters or leaves a room. Lutron makes use of radio waves and the attachment of the sensor unit placed anywhere in the house. Available in three different colors, it can be all yours for $130.