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    $9.99
    Sainsmart 4/8-Channel 5V 2A Solid State Relay, High Level Trigger 4-CH / USA
    SainSmart.com
    $9.99
    Sainsmart 4/8-Channel 5V 2A Solid State Relay, High Level Trigger 4-CH / USA
    SainSmart.com
    $19.89
    788-304 WAGO Relay Module, 24 VDC Nominal Input Voltage
    Valin Process Control Solutions
    $19.89
    788-304 WAGO Relay Module, 24 VDC Nominal Input Voltage
    Valin Process Control Solutions
    $28.91
    Hoembpn 5 Pcs 3V Relay Module Power Switching Board 1 Channel Optocoupler Isolation Relay Board (High Level Trigger) DC 3-3.3V For Iot ESP8266
    ibspot
    $28.91
    Hoembpn 5 Pcs 3V Relay Module Power Switching Board 1 Channel Optocoupler Isolation Relay Board (High Level Trigger) DC 3-3.3V For Iot ESP8266
    ibspot
    $36.25
    $39.00
    Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
    Amazon.com
    Free shipping
    $36.25
    $39.00
    Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
    Amazon.com
    $13.99
    AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module With Optocoupler Opto Isolation High Level Trigger For IOT ESP8266 Development Board
    Amazon.com
    $13.99
    AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module With Optocoupler Opto Isolation High Level Trigger For IOT ESP8266 Development Board
    Amazon.com
    $10.99
    1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
    Amazon.com
    $10.99
    1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module For Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official
    Amazon.com
    $35.71
    Plc Board Relay Shield Module For Arduino Multifunction Delay Timer
    eBay
    $35.71
    Plc Board Relay Shield Module For Arduino Multifunction Delay Timer
    eBay
    $64.00
    ABX00004 ARDUINO - Components & Relay PC Board Mount Supplies
    Radwell.com
    $64.00
    ABX00004 ARDUINO - Components & Relay PC Board Mount Supplies
    Radwell.com
    $8.49
    2 Pcs 5V 2 Channel DC 5V Relay Module With Optocoupler High/Low Level Trigger Expansion Board
    Amazon.com
    $8.49
    2 Pcs 5V 2 Channel DC 5V Relay Module With Optocoupler High/Low Level Trigger Expansion Board
    Amazon.com
    $5.95
    Jbtek 4 Channel DC 5V Relay Module For Arduino Raspberry Pi DSP AVR PIC ARM
    Amazon.com
    $5.95
    Jbtek 4 Channel DC 5V Relay Module For Arduino Raspberry Pi DSP AVR PIC ARM
    Amazon.com
    $34.33
    ANMBEST 16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino
    ibspot
    $34.33
    ANMBEST 16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino
    ibspot
    $12.99
    Valefod DC 12V Relay Module 1-Channel Relay Switch With Optocoupler Isolation High/Low Level Trigger, Pack Of 10
    Amazon.com
    $12.99
    Valefod DC 12V Relay Module 1-Channel Relay Switch With Optocoupler Isolation High/Low Level Trigger, Pack Of 10
    Amazon.com
    $5.69
    Tolako 5V Relay Module 5V Indicator Light LED 1 Channel Relay Module For Arduino ARM PIC AVR MCU
    Amazon.com
    $5.69
    Tolako 5V Relay Module 5V Indicator Light LED 1 Channel Relay Module For Arduino ARM PIC AVR MCU
    Amazon.com
    $1.47
    1-5Pcs DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger
    Aliexpress
    $1.47
    1-5Pcs DC 5V 9V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger
    Aliexpress