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    $9.55
    KEYESTUDIO 4 Channel Relay Shield 5V For Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board
    Amazon.com
    60
    $9.55
    KEYESTUDIO 4 Channel Relay Shield 5V For Arduino Controller R3 ARM PIC AVR STM32 Raspberry Pi HIGH Level Trigger Relay Module Expansion Board
    Amazon.com
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    $15.99
    Waveshare USB To RS485 Converter With Protection Circuits, Compatible With Tvs
    Amazon.com
    86
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    Waveshare USB To RS485 Converter With Protection Circuits, Compatible With Tvs
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    $16.99
    Waveshare RS485 CAN HAT, Compatible With Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, Allowing Stable Long-Distance RS485/CAN
    Amazon.com
    38
    $16.99
    Waveshare RS485 CAN HAT, Compatible With Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, Allowing Stable Long-Distance RS485/CAN
    Amazon.com
    38
    $18.78
    5Pcs 1 Channel DC 5V Relay Switch Module For Arduino Raspberry Pi PIC ARM AVR
    vipih.com
    $18.78
    5Pcs 1 Channel DC 5V Relay Switch Module For Arduino Raspberry Pi PIC ARM AVR
    vipih.com
    $15.30
    Seeed Studio 103020137 Relay Board, Arduino/Raspberry Pi | Relay Boards
    Newark
    $15.30
    Seeed Studio 103020137 Relay Board, Arduino/Raspberry Pi | Relay Boards
    Newark
    $33.78
    8-CH Relay Expansion Module Case HAT Kit For RPI Raspberry Pi Pico W WH Board
    vipih.com
    $33.78
    8-CH Relay Expansion Module Case HAT Kit For RPI Raspberry Pi Pico W WH Board
    vipih.com
    $10.99
    NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB)
    Amazon.com
    8
    $10.99
    NOYITO 1-Channel USB Relay Module USB Intelligent Control Switch USB Switch (1-Channel USB)
    Amazon.com
    8
    $8.67
    $9.96
    16 Channel Relay Shield Module RM16LS 5V 12V 24V For Raspberry Pi Pcduino Development Board DIY Kit
    AliExpress
    Free shipping
    12% off
    $8.67
    $9.96
    16 Channel Relay Shield Module RM16LS 5V 12V 24V For Raspberry Pi Pcduino Development Board DIY Kit
    AliExpress
    Free shipping
    $11.80
    5V 3 Channel Relay Module Shield Expansion Board HAT Kit For Rpi Raspberry Pi Zero W WH 3 Model B 3B
    AliExpress
    Free shipping
    $11.80
    5V 3 Channel Relay Module Shield Expansion Board HAT Kit For Rpi Raspberry Pi Zero W WH 3 Model B 3B
    AliExpress
    Free shipping
    $35.89
    8-CH Relay Expansion Module Case HAT Kit For RPI Raspberry Pi Pico W WH Board Generic
    motorgenic.com
    Free shipping
    $35.89
    8-CH Relay Expansion Module Case HAT Kit For RPI Raspberry Pi Pico W WH Board Generic
    motorgenic.com
    Free shipping
    $78.85
    PB4R: Opto 22 | I/O Board | Galco
    Galco Industrial Electronics
    $78.85
    PB4R: Opto 22 | I/O Board | Galco
    Galco Industrial Electronics
    $25.00
    Raspberry-Pi RPI-COMPUTE3-LT. Rpi, Compute Module 3 Lite Rohs Compliant: Yes | Raspberry Pi Compute Modules
    Newark
    $25.00
    Raspberry-Pi RPI-COMPUTE3-LT. Rpi, Compute Module 3 Lite Rohs Compliant: Yes | Raspberry Pi Compute Modules
    Newark
    $13.96
    4-Channel Relay Module 5V For Arduino Esp32 Esp8266 Raspberry Pi
    eBay
    Free shipping
    $13.96
    4-Channel Relay Module 5V For Arduino Esp32 Esp8266 Raspberry Pi
    eBay
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    $28.04
    Xygstudy Raspberry Pi Expansion Board Power Relay Module For Raspberry
    eBay
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    $28.04
    Xygstudy Raspberry Pi Expansion Board Power Relay Module For Raspberry
    eBay
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    $27.90
    4 Spdt 10Amp Power Relay Module For Raspberry Pi Etc Iot Project Dc12v
    eBay
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    $27.90
    4 Spdt 10Amp Power Relay Module For Raspberry Pi Etc Iot Project Dc12v
    eBay
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    $26.06
    4 Spdt 10Amp Power Relay Module For Raspberry Pi Etc Iot Project Dc24v
    eBay
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    $26.06
    4 Spdt 10Amp Power Relay Module For Raspberry Pi Etc Iot Project Dc24v
    eBay
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    $12.90
    Raspberry Pi Power Relay Board Expansion Module With Cooling Fans And RGB-LED
    eBay.com
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    $12.90
    Raspberry Pi Power Relay Board Expansion Module With Cooling Fans And RGB-LED
    eBay.com
    Free shipping
    $304.85
    $335.00
    Txm1.8X Module Dhl/Fedex
    eBay
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    $304.85
    $335.00
    Txm1.8X Module Dhl/Fedex
    eBay
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