12V step-down constant current drive circuit TTL modulation 1W 1.6W 2W 445/405/520nm with heat sink 8-14v input

12V step-down constant current drive circuit TTL modulation 1W 1.6W 2W 445/405/520nm with heat sink 8-14v input
sku: 4001340078901
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$7.61
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