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post #3 of Old 08-13-2009
noelex77
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Quote:
Originally Posted by Ringding View Post

Are there cheaper options like the Attwood all around LED light combined with a third party photodiode switch? Both the light and the diode switch are each around $60? So roughly the cost of the OGM light.
Not many LED lights have a photo diode. The reason is that the photo diode circuit consumes some electricity both when the light is off and on. Although the consumption is only small it is difficult to design a circuit that will consume much less electricity than leaving the LED on longer, even 24hrs.

Some solar panel regulators have a circuit that will switch on and off when the solar output drops a night.
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