5V-40V To 3.7V DC-DC Step-Down Buck Converter Board For WIFI esp8266 Replace 18650 Rechargeable Li-ion Batteies Power Supply

5V-40V To 3.7V DC-DC Step-Down Buck Converter Board For WIFI esp8266 Replace 18650 Rechargeable Li-ion Batteies Power Supply
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sku: 1005005676649241
$7.94
Shipping from: China
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