DC 7V 24V 2 Channel RS232/TTL UART Serial Port Control Relay Switch Board SCM Interface Module Modbus RTU Dual Relay Module

DC 7V 24V 2 Channel RS232/TTL UART Serial Port Control Relay Switch Board SCM Interface Module Modbus RTU Dual Relay Module
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sku: 1005004085768192
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$3.49
Shipping from: China
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