DC 12V 2 Channel Serial Port RS232 Relay Module Board
RS232 Relay
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RS232 control relay board DC 24V serial switch module for PLC
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5x 8ch 5V 12V 24V RS232 IO Control Switch Board Com DB9 Serial port Relay Module | eBay
DC 5V 12V 2 Channel RS232 Serial Port Control Relay Switch Board SCM I – Aideepen
DC 12V 2 Channel Serial Port RS232 Relay Module Board
3pcs DC 12V RS232 Serial Port Delay Relay Switch Module PC COM DB9 ARM MCU UART Remote Control Board
DC 12V 2 Channel Serial Port RS232 Relay Module Board
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2CH RS232 Relay for PC UART COM Serial Port
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Relay Boards With I/O :: General Purpose :: RS232 Control :: 8 Channel RS232 Relay Board W/IO and w/240V Power
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