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4-Channel USB Relay Board with 6-Channel A/D Interface
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USB Relay Controller Board - 4 Channels for Home Automation
USB Relay Controller Board - 4 Channels for Home Automation
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Card Output 4 Relay Na Nc Com 24V 8A Connection USB Software PC 5 V / Dc 4064161039732 | eBay
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16Channel-Relay-Module chitters when supply voltage is connected - Project Guidance - Arduino Forum
USB Relay Controller - High Power USB Relays for Industrial Applications
USB Relay
USB Relay
USB Eight Channel Relay Board for Automation
