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    1. eBay
    2. Business & Industrial
    3. Electrical Equipment & Supplies
    4. Relays
    5. Relay Modules & Relay Boards
    6. Relay Board 12v
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    Relay Board 12v

    Side Refine Panel

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    • Relays
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      • Bluetooth
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      • Not Specified
    • Mounting Style

      • Panel
      • DIN Rail
      • Cable
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      • Timer
      • Remote Control
      • Wireless
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    • Time: ending soonest
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    List View

    1-48 of 752 Results

    • 12V 8 CH Channel IR Infrared wireless Remote Control Switch Relay Module Board

      12V 8 CH Channel IR Infrared wireless Remote Control Switch Relay Module Board

      C $14.33
      C $1.25 shipping
      or Best Offer
      142 sold
    • DC 5V 12V 24V High Power 30A Trigger Relay Switch On/Off Board Isolation Module

      DC 5V 12V 24V High Power 30A Trigger Relay Switch On/Off Board Isolation Module

      C $5.00 to C $5.38
      C $1.25 shipping
      129 sold
    • 12V 24V 36V 48V 30A Battery anti-over discharge control protection Relay Board

      12V 24V 36V 48V 30A Battery anti-over discharge control protection Relay Board

      C $9.47 to C $9.75
      C $1.25 shipping
    • 12V Light Sensor Photoresistor Relay Board Module - XH-M131

      12V Light Sensor Photoresistor Relay Board Module - XH-M131

      C $9.75
      C $15.68 shipping
    • DC 5v 12v 24v Trigger Delay Time Turn on Switch Timer Board Relay Module Car

      DC 5v 12v 24v Trigger Delay Time Turn on Switch Timer Board Relay Module Car

      C $1.84
      C $4.94 shipping
      or Best Offer
      988 sold
    • 12V Display LED Timer Relay Programmable Board Buzzer Button Module Delay Switch

      12V Display LED Timer Relay Programmable Board Buzzer Button Module Delay Switch

      C $3.92 to C $4.58
      C $5.70 shipping
      276 sold
    • Two Channel 2CH 12V IR Infrared Remote Controll Switch Relay Module Board

      Two Channel 2CH 12V IR Infrared Remote Controll Switch Relay Module Board

      C $6.70
      C $5.70 shipping
    • 12V Display LED Timer Relay Programmable Module Delay Switch Board Buzzer Button

      12V Display LED Timer Relay Programmable Module Delay Switch Board Buzzer Button

      C $3.91 to C $4.57
      C $5.52 shipping
    • 4-Channel DC 12V Volt 30A Relay Module Control Board Optocoupler Isolation NEW

      4-Channel DC 12V Volt 30A Relay Module Control Board Optocoupler Isolation NEW

      C $18.39
      Was: C $19.36
      C $5.05 shipping
      137 sold
    • 30A High Current Contactor Switch 12V Electric Relay Board DC Power Control new

      30A High Current Contactor Switch 12V Electric Relay Board DC Power Control new

      C $5.28
      C $5.55 shipping
      62 sold
    • 5/12V 1/2/4/8 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

      5/12V 1/2/4/8 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

      C $3.58 to C $6.71
      Was: C $11.34
      C $2.38 shipping
    • NEW 30A High Current Contactor Switch 12V Electric Relay Board DC Power Control

      NEW 30A High Current Contactor Switch 12V Electric Relay Board DC Power Control

      C $5.27
      C $5.53 shipping
      89 sold
    • DC 12V LED Timer Relay Programmable Module Delay Switch Board Buzzer Button

      DC 12V LED Timer Relay Programmable Module Delay Switch Board Buzzer Button

      C $3.79 to C $4.90
      C $6.32 shipping
    • Smart Battery Charger Power Relay Control Board DC12V Automatic Control Board

      Smart Battery Charger Power Relay Control Board DC12V Automatic Control Board

      C $3.47
      C $5.55 shipping
      385 sold
    • 12V Battery Automatic Charging Controller Module Protection Board Relay Switch

      12V Battery Automatic Charging Controller Module Protection Board Relay Switch

      C $5.76
      C $1.25 shipping
      or Best Offer
      126 sold
    • DC 5V 12V Adjustable Delay Time Turn On Off Switch Timer Relay Module Board

      DC 5V 12V Adjustable Delay Time Turn On Off Switch Timer Relay Module Board

      C $1.90 to C $6.32
      C $4.94 shipping
    • 2Channel 12V Relay Module Board Shield With Optocoupler Support Trigger Rek3WIDL

      2Channel 12V Relay Module Board Shield With Optocoupler Support Trigger Rek3WIDL

      C $4.35
      Free shipping
      or Best Offer
    • DC 5v 12v Delay Timer Switch Adjustable NE555 MCU Relay Module Board LED display

      DC 5v 12v Delay Timer Switch Adjustable NE555 MCU Relay Module Board LED display

      C $1.90 to C $6.32
      C $1.25 shipping
    • ❆ New 16-Channel 5V12V Relay Module Board For Arduino PIC AVR MCU DSP ARM PLC #

      ❆ New 16-Channel 5V12V Relay Module Board For Arduino PIC AVR MCU DSP ARM PLC #

      C $19.96
      Was: C $21.46
      Free shipping
      or Best Offer
    • 12V Eight(8) Relay Switch Module Board (interface Card)

      12V Eight(8) Relay Switch Module Board (interface Card)

      C $35.83
      C $40.51 shipping
    • 1/2/4 Channel Relay Module Board With Optocoupler High/Low Level Triger 30A

      1/2/4 Channel Relay Module Board With Optocoupler High/Low Level Triger 30A

      C $1.30 to C $5.04
      C $6.30 shipping
      52 sold
    • Smart Battery Charger Power Relay Control Board DC12V Automatic Control Board  M

      Smart Battery Charger Power Relay Control Board DC12V Automatic Control Board M

      C $3.47
      C $5.55 shipping
    • 12V LED Timer Relay Programmable Display Module Delay Switch Board Car Buzzer

      12V LED Timer Relay Programmable Display Module Delay Switch Board Car Buzzer

      C $4.04
      C $5.70 shipping
    • 12V 4 Channel Relay High Low Level Optocoupler Board Module  +-

      12V 4 Channel Relay High Low Level Optocoupler Board Module +-

      C $9.03
      Free shipping
      or Best Offer
    • DC 12V 16 Channel Bluetooth Relay Board Wireless Remote Control Switch SG

      DC 12V 16 Channel Bluetooth Relay Board Wireless Remote Control Switch SG

      C $49.51
      Free shipping
      Only 1 left!
    • DC 5V 6V 12V 24V Delay Turn On/Off Cycle Signal Trigger Timer Relay Switch Board

      DC 5V 6V 12V 24V Delay Turn On/Off Cycle Signal Trigger Timer Relay Switch Board

      C $7.91 to C $8.67
      C $1.25 shipping
    • OMRON Relay Module SPDT 8 Ways Driver Board Socket DC 12V16A 1NO+1NC 35mm Din

      OMRON Relay Module SPDT 8 Ways Driver Board Socket DC 12V16A 1NO+1NC 35mm Din

      C $29.13
      C $6.33 shipping
    • NE555 DC 5V 12V Delay Relay shield Timer Switch Adjustable Module Board 0 To 10

      NE555 DC 5V 12V Delay Relay shield Timer Switch Adjustable Module Board 0 To 10

      C $1.65 to C $1.77
      C $5.81 shipping
    • 2Channel 12V Relay Module Board Shield With Optocoupler Support Trigger Rek3WIGE

      2Channel 12V Relay Module Board Shield With Optocoupler Support Trigger Rek3WIGE

      C $4.81
      Free shipping
      or Best Offer
    • 1x5/12V 1/2/4/6/8 Channel Relay Board Module Optocoupler For PiC ARM Tool H4D9

      1x5/12V 1/2/4/6/8 Channel Relay Board Module Optocoupler For PiC ARM Tool H4D9

      C $2.14 to C $10.50
      Free shipping
    • DC 12V NE555 Delay Time Relay Timer Switch LED Display Delay Relay Module Board

      DC 12V NE555 Delay Time Relay Timer Switch LED Display Delay Relay Module Board

      C $1.66 to C $6.64
      Was: C $6.99
      C $5.50 shipping
    • DC12V 8-16Channel RS485 Relay Delay Module Modbus RTU PLC Expaning Board

      DC12V 8-16Channel RS485 Relay Delay Module Modbus RTU PLC Expaning Board

      C $18.93 to C $44.30
      C $5.70 shipping
    • DC12V 8/16Channel RS485 Relay Module Modbus RTU PLC Expaning Board DIN Rail Case

      DC12V 8/16Channel RS485 Relay Module Modbus RTU PLC Expaning Board DIN Rail Case

      C $19.10 to C $44.30
      C $6.32 shipping
    • USB Eight Channel Relay Board for Automation - 12V

      USB Eight Channel Relay Board for Automation - 12V

      3.5 out of 5 stars
      (3)3 product ratings - USB Eight Channel Relay Board for Automation - 12V
      C $53.93
      C $40.51 shipping
      221 sold
    • 1 Channel Infrared Switch Relay Driving Module Board 12V Remote Controller best

      1 Channel Infrared Switch Relay Driving Module Board 12V Remote Controller best

      C $3.35
      C $5.90 shipping
      143 sold
    • 8 Channel 12V USB Relay Module Interface Board With Case For Home Automation

      8 Channel 12V USB Relay Module Interface Board With Case For Home Automation

      C $49.61
      C $3.17 shipping
    • KMTronic RS232 Serial COM controlled 8 Channel Relay Board BOX - 12V

      KMTronic RS232 Serial COM controlled 8 Channel Relay Board BOX - 12V

      C $52.41
      Was: C $58.24
      C $12.03 shipping
      135 sold
    • DC12V 6 Channels OMRON Relay Module PLC Amplifier Board G2R-1-E relay module

      DC12V 6 Channels OMRON Relay Module PLC Amplifier Board G2R-1-E relay module

      C $40.51
      Free shipping
    • DC 5V 12V Adjustable Timer Delay Turn On Off Switch Board Time Relay Module Car

      DC 5V 12V Adjustable Timer Delay Turn On Off Switch Board Time Relay Module Car

      C $3.19 to C $3.61
      C $4.94 shipping
    • 12V Display LED Timer Relay Delay Programmable Switch Board Buzzer Button Module

      12V Display LED Timer Relay Delay Programmable Switch Board Buzzer Button Module

      C $3.92 to C $5.70
      C $6.32 shipping
    • Dual Channels Relay HIFI Volume Control Board ALPS Potentiometer AC12V to 18V

      Dual Channels Relay HIFI Volume Control Board ALPS Potentiometer AC12V to 18V

      C $50.08
      Was: C $54.44
      C $7.72 shipping
      or Best Offer
    • 12V 24V 1/2/4/8 Channels Relay Module Interface Board with optocoupler 4 Arduino

      12V 24V 1/2/4/8 Channels Relay Module Interface Board with optocoupler 4 Arduino

      C $6.48 to C $11.58
      Free shipping
    • 4-Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation S9S2

      4-Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation S9S2

      C $17.91
      Was: C $18.85
      Free shipping
    • LED Automation Delay Relay Timer Control Module PCB Board White Case 12V/24V

      LED Automation Delay Relay Timer Control Module PCB Board White Case 12V/24V

      C $7.80
      C $5.59 shipping
    • 12V AC/DC SPDT Relay Module Board Module for Industrial Home Impprovement

      12V AC/DC SPDT Relay Module Board Module for Industrial Home Impprovement

      C $18.99
      Free shipping
    • 5V 12V 4 Channel with Optocoupler Output 4 Way Relay Module Expansion Board #R

      5V 12V 4 Channel with Optocoupler Output 4 Way Relay Module Expansion Board #R

      C $6.32
      Free shipping
    • 4-Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation V3K4

      4-Channel DC 12V 30A Relay Module Control Board Optocoupler Isolation V3K4

      C $17.93
      Was: C $18.86
      Free shipping
    • DC 5V/12V/24V 30A 1-Channel/2-Channel Relay Module Board High/Low Trigger Hot

      DC 5V/12V/24V 30A 1-Channel/2-Channel Relay Module Board High/Low Trigger Hot

      C $14.61 to C $14.74
      Was: C $15.39
      C $5.05 shipping
      96 sold

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