DC 6-24V RS485 RS232 TTL RTU Control UART Control Module 8 Channel IO Control Relay Switch Board Support PLC For Arduino

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Dc 12v 24v 8 isolated io din35 c45 rail box uart rs485 mosfet module modbus rtu control switch board for relay plc led ptz

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Modbus rtu 8-channel 8ch relay module switch 8-way output 8-way inputs rs485 ttl communication uart 7-30v relay switch

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8 channel dc 12v rs485 relay module modbus rtu 485 remote control switch for plc ptz camera security monitoring

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8 channel dc 12v rs485 relay module modbus rtu 485 remote control switch for plc ptz camera security monitoring

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1 pcs 8 channel dc 12v rs485 relay module modbus rtu 485 remote control switch for plc ptz camera security monitoring

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Dc 12v 24v 32-channels din35 c45 rail box rs485 modbus rtu uln2803a darlington transistor controller plc io expansion board

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8 bit digital switch ttl lvttl cmos io input uart rs485 modbus rtu module for plc expand

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Modbus rtu 4 channel 12v relay module switch input / output rs485 / ttl communication interface relay 4 relay indicator board

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