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Modbus Rtu 4 Channel Relay Module 4ch Input Optocoupler Isolation Rs485 Mcu For Arduino - Accessories - AliExpress
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Optocoupler Integration Advice. Using uC and an ECU to drive this solid state relay. Think analog AND-gate with an inverter on the ECU input. Need an LED on/off indicator as well. I
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Opto-coupler Input Circuits for PLCs
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Variable DC Input for OptoCoupler for Microcontroller Interface : r/AskElectronics
