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  1. DIY Parts 5V High/Low Level Trigger 4-CH Relay Module Expansion Board

    DIY Parts 5V High/Low Level Trigger 4-CH Relay Module Expansion Board

    $10.88

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  2. Red DC 9V 4 Way High/Low Level Trigger Optocoupler Driver Relay Module

    Red DC 9V 4 Way High/Low Level Trigger Optocoupler Driver Relay Module

    $10.87

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  3. DC 24V 4 Channel PLC Relay Amplifier Output PCB Circuit Board for Arduino

    DC 24V 4 Channel PLC Relay Amplifier Output PCB Circuit Board for Arduino

    $34.21

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  4. 5VDC Coil 10Amp Low Level Trigger 4 Channel Power PLC Relay Module for Arduino

    5VDC Coil 10Amp Low Level Trigger 4 Channel Power PLC Relay Module for Arduino

    $13.09

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  5. SRD 12VDC SL C Triggered Time Timer Delay Power Relay Module 12V DC

    SRD 12VDC SL C Triggered Time Timer Delay Power Relay Module 12V DC

    $10.74

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