Are you sick of having to fumble around to see where you are going when you come home late at night? Maybe it is time to check into the Leviton energy saving light switch. This motion detector is UL listed, and can be used with up to a 500W incandescent bulb. The detector picks up movement within 150 degrees. It will reduce your energy usage and costs roughly $34.
There are many advantages to installing a motion detector. When you walk into a room you don't have to fumble around with your keys. It will reduce your energy consumption by about 35%. Further, your bulb will generally last 35 times longer. It has an adjustable time delay, so you can tell it when to go on or off. If you want the lights to go off automatically when the sunlight overrides the bulb, it can be set to do so.
There are some disadvantages to this device. It may not have the width of motion that you require and you may need to buy a more expensive one. As is, the detector is fairly expensive and it may take a while on the back end to make up on the cost of the device.
If you are in the market for an item that could be a handy thing, than the Leviton light switch may be something to look into. It detects movement within 150 degrees and can reduce the energy consumption of that bulb by 35%, as well as extend the life significantly. At around $34 it may be a worthwhile purchase.