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  1. DC5V Coil 2-Channel Optocoupler Relay PCB Board Module Switch for Arduino

    DC5V Coil 2-Channel Optocoupler Relay PCB Board Module Switch for Arduino

    $10.74

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  2. Single Channel PLC Time Delay Relay Module Control Board DC9V FC-34 for Arduino

    Single Channel PLC Time Delay Relay Module Control Board DC9V FC-34 for Arduino

    $10.04

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  3. DC5V 1 Channel Red and Green LED Light Humidity Detection Sensor Relay Module

    DC5V 1 Channel Red and Green LED Light Humidity Detection Sensor Relay Module

    $11.00

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  4. One Way High Level Trigger Optical Coupler PLC Relay Module DC5V 10A for Arduino

    One Way High Level Trigger Optical Coupler PLC Relay Module DC5V 10A for Arduino

    $4.52

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  5. Low Level Trigger Optocoupler Relay Module DC12V 10A 8 Channel for Arduino

    Low Level Trigger Optocoupler Relay Module DC12V 10A 8 Channel for Arduino

    $13.35

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  6. 5V Coil Volt 10A Three Terminals Single Channel 1CH Relay Expansion Module

    5V Coil Volt 10A Three Terminals Single Channel 1CH Relay Expansion Module

    $4.33

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  7. Blue 1-Ch Normally Open Triggered Time Delay Relay Switch Module DC 12V

    Blue 1-Ch Normally Open Triggered Time Delay Relay Switch Module DC 12V

    $10.19

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  8. SRD-12VDC-SL-C 1 Channel 1CH Low Level Power Relay Module 10A 12V

    SRD-12VDC-SL-C 1 Channel 1CH Low Level Power Relay Module 10A 12V

    $4.12

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  9. 1CH High Level Trigger Power Relay Module Board Blue 9V for PIC 51 AVR

    1CH High Level Trigger Power Relay Module Board Blue 9V for PIC 51 AVR

    $4.49

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  10. DC 5V Sensitivity Control Potentiometer Humidity Sensor Relay Module

    DC 5V Sensitivity Control Potentiometer Humidity Sensor Relay Module

    $10.94

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