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![4-Channel Relay Module-10A [Four-Relay-Module] - US $2.50 : HAOYU Electronics : Make Engineers Job Easier](http://www.haoyuelectronics.com/Attachment/Four-Relay-Module/Four-Relay-Module-1.jpg "4-Channel Relay Module-10A [Four-Relay-Module] - US $2.50 : HAOYU Electronics : Make Engineers Job Easier")
4-Channel Relay Module-10A [Four-Relay-Module] - US $2.50 : HAOYU Electronics : Make Engineers Job Easier
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4-Channel Relay Module for Arduino & Raspberry Pi - 5V - PiShop.us
