Modbus-Rtu 1/2 Channel 7-24V Relay Module Switch Modbus Rtu 4 Channel Relay Output 12V Switch Input 485 Communication Ttl Pin He

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Modbus-Rtu 1/2 Channel 7-24V Relay Module Switch Modbus Rtu 4 Channel Relay Output 12V Switch Input 485 Communication Ttl Pin He

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Modbus-Rtu 1/2 Channel 7-24V Relay Module Switch Modbus Rtu 4 Channel Relay Output 12V Switch Input 485 Communication Ttl Pin He

Modbus-Rtu 1/2 Channel 7-24V Relay Module Switch Modbus RTU 4 Channel Relay Output 12V Switch Input 485 Communication TTL Pin He