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Changing cctv ir led photocell

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stuee

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Hi, i have 3 cctv cameras that when it gets a little dark they adjust the shutter and go infrared mode.
I have round that the photcell is whats controlling this.
The manufacture (Chinese) has no idea to change or its value and not helpful.

Is there a way i can test what its value is and add perhaps a resistor or change it to a different one that doesn't turn on the ir / shutter till its darker?

thanks


this is what its the same as.

http://www.ebanggood.com/Infrared-I...D-Security-Camera-Security-Cameras-74890.html
 
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