dear mr Deepak kumar, i have seen your night lamp with LDR, and it is very good and interestimg. why a 9 volt battery is used,i dont understand,and what is NO and NC in relay also i have not understood. pl reply to me by g mail: sreenivasanraju1944@ gmail.com please
dear mr Deepak kumar, i have seen your night lamp with LDR, and it is very good and interestimg. why a 9 volt battery is used,i dont understand,and what is NO and NC in relay also i have not understood. pl reply to me by g mail: sreenivasanraju1944@ gmail.com please
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