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There are different kinds depending on what kind of light activates it (sunlight, lamp light, flashing light), whether it is waterproof or raintight, how strong a housing it is in, how compact it is, whether it has a fiberoptic cable attached, and how big an electrical load it can turn on. Consumer quality ones for turning on an outside light probably cost about $30 and industrial grade ones that can survive for years in a factory are probably at least $100. More features on those pricier ones make them even more expensive.

2006-10-08 15:07:07 · answer #1 · answered by Rich Z 7 · 0 0

Home Depot, security lighting section, for about $5 to start. Screws into light socket, then bulb goes into it.

2006-10-08 15:15:04 · answer #2 · answered by Thorbjorn 6 · 0 0

Lucas C,
I just bought two myself at LOEWS hardware store.
TDCWH

2006-10-10 10:25:56 · answer #3 · answered by TDCWH 7 · 0 0

Thanks bob

2006-10-08 16:10:07 · answer #4 · answered by T C 6 · 0 0

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