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DC 12V 16 Channel RS232 Relay Board DB9 Female Interface Serial Remote Control Switch 10A Smart Relay Module for Fan LED Light

For Fan LED Light DC 12V 16 Channel RS232 Relay Board DB9 Female Interface Serial Remote Control Switch 10A Smart Relay Module

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2 in 1 DC 5V 12V 24V 8CH USB Serial Port Relay Module UART RS232 TTL Multifunction Switch Board CH340 for Motor LED PTZ PLC IPC

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8Ch USB Serial Port Optical Isolation Relay Module Rs232 Switch Board Ch340 For Win10 Win7 Linux Max Os

8 Channel RS232 Relay Module PC Serial Ports RS232 TTL232 Control Relay Remote Control Switch With Indicator Light

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8Ch USB Serial Port Optical Isolation Relay Module Rs232 Switch Board Ch340 For Win10 Win7 Linux Max Os

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