Gikfun Eletronic Hourglass led Diy Kits Welding Practice Board Blue Ray EK1886
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<b>[Product Information]</b><br>
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<li>Eletronic Hourglass led Diy Kits</li>
<li>Power Supply Voltage：3.3-5V</li>
<li>The suite adopts double layer PCB, and the circuit consists of 30 pieces white LED blue ray.</li>
<li>It can be used as decoration of small night light.</li>
<li>Under the control of MCU program, it displays analog hourglass iamge.</li>
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