Green gadgets keep your home office humming

Buy green, save greenbacks

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Kill a Watt EZ Electricity Usage Monitor

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Smart Strip LCG3 Energy Saving Surge Protector

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Belkin WeMo Automation Switch & Motion Sensor

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Leviton Occupancy Sensor

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Logitech Solar Keyboard

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Logitech Marathon Mouse

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Belkin Conserve Valet

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Nest Learning Thermostat

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Philips Hue Connected Bulbs

Even though LED light bulbs consume 80 percent less energy than incandescents, their price remains dauntingly steep, with a starting price of $20 per bulb versus $1.25 for a CFL. But some recent LED bulbs do more than light up. Bulbs in the Philips Hue series come networked together, each with its own IP address. By using an iOS app and a bridge device, you can set lighting schedules and monitor energy consumption. You shouldn't have to worry about changing each bulb for up to 20 years.

Price: $200 for starter pack with bridge and three bulbs