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    $11.99
    AEDIKO 10Pcs DC 5V Relay Module - 1 Channel Relay Switch Board With Optocoupler Isolation, High Or Low Level Trigger
    Amazon.com
    $11.99
    AEDIKO 10Pcs DC 5V Relay Module - 1 Channel Relay Switch Board With Optocoupler Isolation, High Or Low Level Trigger
    Amazon.com
    $7.31
    $15.24
    10PCS 5V One Channel Relay Module Relay Switch With OPTO Isolation High Low Level Trigger For
    Aliexpress
    52% off
    $7.31
    $15.24
    10PCS 5V One Channel Relay Module Relay Switch With OPTO Isolation High Low Level Trigger For
    Aliexpress
    $4.55
    5V 1/2/4/6/8 Channel With Optocoupler Relay Board Module LED For Arduino NEW. GCSUPERMARKET. Printed Circuit Boards Pcbs .
    eBay.com
    $4.55
    5V 1/2/4/6/8 Channel With Optocoupler Relay Board Module LED For Arduino NEW. GCSUPERMARKET. Printed Circuit Boards Pcbs .
    eBay.com
    $1.34
    $1.68
    10/5Pcs 5V 1 Channel Relay Module With Optocoupler KY-019 1 Way For Arduino
    Aliexpress
    Free shipping
    20% off
    $1.34
    $1.68
    10/5Pcs 5V 1 Channel Relay Module With Optocoupler KY-019 1 Way For Arduino
    Aliexpress
    $0.87
    $1.09
    Smart Electronics 1 Channel 5V DC Relay Module Solid State High Level Trigger G3MB-202P Relay SSR
    Aliexpress
    20% off
    $0.87
    $1.09
    Smart Electronics 1 Channel 5V DC Relay Module Solid State High Level Trigger G3MB-202P Relay SSR
    Aliexpress
    $0.94
    $1.07
    One 1 Channel Relay Module, With Optocoupler Isolation, Fully Compatible With 3.3V And 5V Signal,
    Aliexpress
    12% off
    $0.94
    $1.07
    One 1 Channel Relay Module, With Optocoupler Isolation, Fully Compatible With 3.3V And 5V Signal,
    Aliexpress
    $14.92
    TZT KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM For Ar. Home & Garden 100%. General Purpose Relays.
    eBay.com
    Free shipping
    $14.92
    TZT KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM For Ar. Home & Garden 100%. General Purpose Relays.
    eBay.com
    $24.95
    Valefod Dc 5V Relay Module 1Channel Relay Switch With Optocoupler Isolation Highlow Level Trigger Pack Of 10, 1Ch-5V-10
    alumigogo
    $24.95
    Valefod Dc 5V Relay Module 1Channel Relay Switch With Optocoupler Isolation Highlow Level Trigger Pack Of 10, 1Ch-5V-10
    alumigogo
    $6.99
    1 Channel 5V Relay Module For Arduino 1-Channel Relay KY-019 For PIC AVR DSP ARM. Industrialsino. Black. Relay Accessories. 743785403078.
    eBay.com
    Free shipping
    $6.99
    1 Channel 5V Relay Module For Arduino 1-Channel Relay KY-019 For PIC AVR DSP ARM. Industrialsino. Black. Relay Accessories. 743785403078.
    eBay.com
    $28.75
    Diann 12Pcs Dc 5 V Relay Module 1 Channel Relay Board With Optocoupler Support High/Low Level Trigger
    Everymarket INC
    $28.75
    Diann 12Pcs Dc 5 V Relay Module 1 Channel Relay Board With Optocoupler Support High/Low Level Trigger
    Everymarket INC
    $9.50
    Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
    Amazon.com
    $9.50
    Single-Channel Relay Module For Raspberry Pi Zero/2B/3B/4B, STM32, ESP32, Arduino - 3.3V/5V Relay Expansion Board With Optocoupler Isolation & LED
    Amazon.com