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8 Channel 5V Relay Module with Optocoupler For Ard uino PIC ARM AVR DSP
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  • S$22.42 
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WIFI test suite ESP8266 WIFI module + CH340 + Power supply + breadboard
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  • S$25.42 
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DC CC 9A 300W Step Down Buck Converter 5-40V To 1.2-35V Power module
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  • S$19.52 
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