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    $8.99
    AEDIKO 4Pcs Relay Module 24V Relay Board 2 Channel With Optocoupler Support High Or Low Level Trigger
    Amazon.com
    $8.99
    AEDIKO 4Pcs Relay Module 24V Relay Board 2 Channel With Optocoupler Support High Or Low Level Trigger
    Amazon.com
    $63.99
    Waveshare Industrial 8-Channel ESP32-S3 Wifi Relay Module, Onboard Isolated RS485 Interface, Built-In Xtensa 32-Bit LX7 Dual-Core Processor, Up To
    Amazon.com
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    $63.99
    Waveshare Industrial 8-Channel ESP32-S3 Wifi Relay Module, Onboard Isolated RS485 Interface, Built-In Xtensa 32-Bit LX7 Dual-Core Processor, Up To
    Amazon.com
    $8.59
    JQC-3FF-S-Z Relay 5V Low Level Trigger One 1 Channel Relay Module Interface Board Shield For PIC AVR DSP ARM MCU Arduino
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    JQC-3FF-S-Z Relay 5V Low Level Trigger One 1 Channel Relay Module Interface Board Shield For PIC AVR DSP ARM MCU Arduino
    Amazon.com
    $112.49
    $124.99
    Schneider Electric Interface Relay W/ Base 120 Vac Coil
    eBay
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    $112.49
    $124.99
    Schneider Electric Interface Relay W/ Base 120 Vac Coil
    eBay
    $32.60
    Relay Module - Switching Relay DC 9,6...9,59999...
    delupe.com
    $32.60
    Relay Module - Switching Relay DC 9,6...9,59999...
    delupe.com
    $45.00
    Entrelec 10 004.21 Module Relay Interface
    eBay
    $45.00
    Entrelec 10 004.21 Module Relay Interface
    eBay
    $38.26
    48.52.7.024.0050, Interface Relay Module, 8A Dpdt, 24V Dc Coil, With
    eBay
    $38.26
    48.52.7.024.0050, Interface Relay Module, 8A Dpdt, 24V Dc Coil, With
    eBay
    $210.25
    FX-RLY Edwards Contact Relay Module
    Valin Process Control Solutions
    $210.25
    FX-RLY Edwards Contact Relay Module
    Valin Process Control Solutions
    $71.00
    Honeywell Relay Interface Module Cgm 92 0146.1
    eBay
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    $71.00
    Honeywell Relay Interface Module Cgm 92 0146.1
    eBay