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$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$68.00
Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
Automation Direct
$14.99
DIANN 30A 4 Channel Relay Module 5V Relay Module Expansion Board High Low Level Trigger With With Optocoupler Isolation For PLC Automation Equipment
Amazon.com
$14.99
DIANN 30A 4 Channel Relay Module 5V Relay Module Expansion Board High Low Level Trigger With With Optocoupler Isolation For PLC Automation Equipment
Amazon.com
$80.00
Relay Output Module: 4-pt, 6-48 VDC/6-208 VAC (PN# F0-04TRS)
Automation Direct
$80.00
Relay Output Module: 4-pt, 6-48 VDC/6-208 VAC (PN# F0-04TRS)
Automation Direct
$171.00
Von Duprin 900-4R 4 Relay Distribution Option Board For Ps900 Power Supplies
Qualified Hardware
1
Free shipping
$171.00
Von Duprin 900-4R 4 Relay Distribution Option Board For Ps900 Power Supplies
Qualified Hardware
$107.00
Securitron RB-4-12 Relay Board 4 DPDT Relays 12V 2 AMP Contacts
B and H Depot
$107.00
Securitron RB-4-12 Relay Board 4 DPDT Relays 12V 2 AMP Contacts
B and H Depot
$18.99
NOYITO 30A 4 Channel Relay Module High Low Level Trigger With Optocoupler Isolation Load DC 30V AC 250V 30A For PLC Automation Equipment Control,
Amazon.com
121
$18.99
NOYITO 30A 4 Channel Relay Module High Low Level Trigger With Optocoupler Isolation Load DC 30V AC 250V 30A For PLC Automation Equipment Control,
Amazon.com
$14.99
Relay 4 Zero 3V 4 Channel Relay Shield For Raspberry Pi, Relay HAT Expansion Relay Board For Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero And Zero W | Power
Amazon.com
$14.99
Relay 4 Zero 3V 4 Channel Relay Shield For Raspberry Pi, Relay HAT Expansion Relay Board For Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero And Zero W | Power
Amazon.com
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
81
$16.99
4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
Amazon.com
$16.55
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$16.55
4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
Amazon.com
$107.00
Securitron RB-4-24 Relay Board 4 DPDT Relays 24V 2 AMP Contacts
B and H Depot
$107.00
Securitron RB-4-24 Relay Board 4 DPDT Relays 24V 2 AMP Contacts
B and H Depot
$6.77
$7.97
JESSINIE 5V 4-Channel Relay Module With Optocoupler Isolation, Supports High And Low Level Trigger, Compatible With Arduino And Raspberry Pi For DIY
Amazon.com
15% off
$6.77
$7.97
JESSINIE 5V 4-Channel Relay Module With Optocoupler Isolation, Supports High And Low Level Trigger, Compatible With Arduino And Raspberry Pi For DIY
Amazon.com
$20.99
GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)
Amazon.com
20
$20.99
GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)
Amazon.com
$6.99
NOYITO 4-Channel Solid State Relay Module High-Level Trigger DC Control AC Load AC 240V 2A For PLC Automation Equipment Control, Industrial Control,
Amazon.com
25
$6.99
NOYITO 4-Channel Solid State Relay Module High-Level Trigger DC Control AC Load AC 240V 2A For PLC Automation Equipment Control, Industrial Control,
Amazon.com
$9.00
4 Channel Relay Module Switch Module ESP-8266 (12V)
Amazon.com
$9.00
4 Channel Relay Module Switch Module ESP-8266 (12V)
Amazon.com
$8.99
Solid State Relay Module 5V 4 Channel High Level Trigger With Fuse Mini DIY Relay For Industrial Electronic (5V 4 Channel)
Amazon.com
$8.99
Solid State Relay Module 5V 4 Channel High Level Trigger With Fuse Mini DIY Relay For Industrial Electronic (5V 4 Channel)
Amazon.com
$9.99
4Pcs 4 Channel 5V Relay Module With Optocoupler For R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 For Raspberry Pi
Amazon.com
5
$9.99
4Pcs 4 Channel 5V Relay Module With Optocoupler For R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 For Raspberry Pi
Amazon.com
$181.99
SR504-4 Switching Relaysr-504-44 Channel Relay Module
Amazon.com
Free shipping
$181.99
SR504-4 Switching Relaysr-504-44 Channel Relay Module
Amazon.com
$16.98
Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Relay 6-24VDC For Automotive Electronics, Motor, LED
Amazon.com
1
$16.98
Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Relay 6-24VDC For Automotive Electronics, Motor, LED
Amazon.com
$36.98
NOYITO 4-Channel Programmable Time Relay Controller 99-Step Multi-Channel Timing Trigger Solenoid Valve Linkage Control LCD Display Optocoupler
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Free shipping
$36.98
NOYITO 4-Channel Programmable Time Relay Controller 99-Step Multi-Channel Timing Trigger Solenoid Valve Linkage Control LCD Display Optocoupler
Amazon.com
$18.99
Jane Eyre Wifi Relay Module 4 Channel Smart Switch Momentary/Self-Locking/Lock Switching For Tuya/Smart Life APP,DIY Garage Door, Compatible With
Amazon.com
244
$18.99
Jane Eyre Wifi Relay Module 4 Channel Smart Switch Momentary/Self-Locking/Lock Switching For Tuya/Smart Life APP,DIY Garage Door, Compatible With
Amazon.com
$13.99
NOYITO 4-Channel 5V Computer USB Control Switch Relay Module Drive-Free Relay Module Plug And Play Suitable For PC Smart Controller
Amazon.com
54
$13.99
NOYITO 4-Channel 5V Computer USB Control Switch Relay Module Drive-Free Relay Module Plug And Play Suitable For PC Smart Controller
Amazon.com
$12.87
12V 4 Channel USB Relay Module Programmable Computer Control Switch For Smart Home PC Intelligent Control
Amazon.com
$12.87
12V 4 Channel USB Relay Module Programmable Computer Control Switch For Smart Home PC Intelligent Control
Amazon.com
$11.99
4 Channel Relay Module - Progressive Automations
Progressive Automations
$11.99
4 Channel Relay Module - Progressive Automations
Progressive Automations
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    Shop 4 channel relay board

    Sponsored
    About our ads
    $68.00
    Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
    Automation Direct
    $68.00
    Relay/analog Combo Module: 4-pt in, 2-pt out, 1-ch in, 1-ch out (PN# 14741859)
    Automation Direct
    $14.99
    DIANN 30A 4 Channel Relay Module 5V Relay Module Expansion Board High Low Level Trigger With With Optocoupler Isolation For PLC Automation Equipment
    Amazon.com
    $14.99
    DIANN 30A 4 Channel Relay Module 5V Relay Module Expansion Board High Low Level Trigger With With Optocoupler Isolation For PLC Automation Equipment
    Amazon.com
    $80.00
    Relay Output Module: 4-pt, 6-48 VDC/6-208 VAC (PN# F0-04TRS)
    Automation Direct
    $80.00
    Relay Output Module: 4-pt, 6-48 VDC/6-208 VAC (PN# F0-04TRS)
    Automation Direct
    $171.00
    Von Duprin 900-4R 4 Relay Distribution Option Board For Ps900 Power Supplies
    Qualified Hardware
    1
    Free shipping
    $171.00
    Von Duprin 900-4R 4 Relay Distribution Option Board For Ps900 Power Supplies
    Qualified Hardware
    $107.00
    Securitron RB-4-12 Relay Board 4 DPDT Relays 12V 2 AMP Contacts
    B and H Depot
    $107.00
    Securitron RB-4-12 Relay Board 4 DPDT Relays 12V 2 AMP Contacts
    B and H Depot
    $18.99
    NOYITO 30A 4 Channel Relay Module High Low Level Trigger With Optocoupler Isolation Load DC 30V AC 250V 30A For PLC Automation Equipment Control,
    Amazon.com
    121
    $18.99
    NOYITO 30A 4 Channel Relay Module High Low Level Trigger With Optocoupler Isolation Load DC 30V AC 250V 30A For PLC Automation Equipment Control,
    Amazon.com
    $14.99
    Relay 4 Zero 3V 4 Channel Relay Shield For Raspberry Pi, Relay HAT Expansion Relay Board For Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero And Zero W | Power
    Amazon.com
    $14.99
    Relay 4 Zero 3V 4 Channel Relay Shield For Raspberry Pi, Relay HAT Expansion Relay Board For Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero And Zero W | Power
    Amazon.com
    $16.99
    4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
    Amazon.com
    81
    $16.99
    4 Channel 12V Relay Module With Optocoupler High Or Low Level Trigger Expansion Board(2PCS) (4 Channel 12V Relay, 4 Channel 12V Relay)
    Amazon.com
    $16.55
    4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
    Amazon.com
    $16.55
    4 Channel Relay Module DC 12V 30A Relay Module With Optocoupler Isolation
    Amazon.com
    $107.00
    Securitron RB-4-24 Relay Board 4 DPDT Relays 24V 2 AMP Contacts
    B and H Depot
    $107.00
    Securitron RB-4-24 Relay Board 4 DPDT Relays 24V 2 AMP Contacts
    B and H Depot
    $6.77
    $7.97
    JESSINIE 5V 4-Channel Relay Module With Optocoupler Isolation, Supports High And Low Level Trigger, Compatible With Arduino And Raspberry Pi For DIY
    Amazon.com
    15% off
    $6.77
    $7.97
    JESSINIE 5V 4-Channel Relay Module With Optocoupler Isolation, Supports High And Low Level Trigger, Compatible With Arduino And Raspberry Pi For DIY
    Amazon.com
    $20.99
    GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)
    Amazon.com
    20
    $20.99
    GUETNEU Relay Board, Relay Module 4 Channel 1 SPDT DIN Rail Mount 24V DC/AC, Interface Board(FY-T734C-D24)
    Amazon.com
    $6.99
    NOYITO 4-Channel Solid State Relay Module High-Level Trigger DC Control AC Load AC 240V 2A For PLC Automation Equipment Control, Industrial Control,
    Amazon.com
    25
    $6.99
    NOYITO 4-Channel Solid State Relay Module High-Level Trigger DC Control AC Load AC 240V 2A For PLC Automation Equipment Control, Industrial Control,
    Amazon.com
    $9.00
    4 Channel Relay Module Switch Module ESP-8266 (12V)
    Amazon.com
    $9.00
    4 Channel Relay Module Switch Module ESP-8266 (12V)
    Amazon.com
    $8.99
    Solid State Relay Module 5V 4 Channel High Level Trigger With Fuse Mini DIY Relay For Industrial Electronic (5V 4 Channel)
    Amazon.com
    $8.99
    Solid State Relay Module 5V 4 Channel High Level Trigger With Fuse Mini DIY Relay For Industrial Electronic (5V 4 Channel)
    Amazon.com
    $9.99
    4Pcs 4 Channel 5V Relay Module With Optocoupler For R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 For Raspberry Pi
    Amazon.com
    5
    $9.99
    4Pcs 4 Channel 5V Relay Module With Optocoupler For R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 For Raspberry Pi
    Amazon.com
    $181.99
    SR504-4 Switching Relaysr-504-44 Channel Relay Module
    Amazon.com
    Free shipping
    $181.99
    SR504-4 Switching Relaysr-504-44 Channel Relay Module
    Amazon.com
    $16.98
    Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Relay 6-24VDC For Automotive Electronics, Motor, LED
    Amazon.com
    1
    $16.98
    Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Relay 6-24VDC For Automotive Electronics, Motor, LED
    Amazon.com