Photo Cell For Dry Contact Closure - Electrical - DIY Chatroom Home Improvement Forum

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Old 11-15-2010, 05:23 PM   #1
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Photo cell for dry contact closure

I am looking for a device that will provide a dry contact closure when a photo cell detects darkness. Use is for a home automation system to control my landscape lighting. I know I could build a circuit with a 120 volt photocell and a 120 volt relay but I am trying to simplify the circuit with a single device. If the circuit needs power, ideally it would use a 9 volt battery.

Any one with an idea? Thanks for any help you can provide.
My electrical answers are based on 2014 NEC, you may have local amendments.

Location: Coastal South Carolina
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Old 11-16-2010, 01:23 PM   #2
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Several landscape lighting companies offer a 12volt photocell. Our local lowes carries them in the landscape lighting isle.
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