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2 Pcs 4 CH DC 12V RS485 Relay Module Modbus RTU &amp AT Command Remote Control Switch For PLC PTZ Camera Security Monitoring

USD 25.19USD 27.99

2 Pcs 4 CH DC 12V RS485 Relay Module Modbus RTU &amp AT Command Remote Control Switch For PLC PTZ Camera Security Monitoring

Description
Specification
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