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Alarm SystemsAll Home SecurityBreakers, Distributors, and Load CentersDimmers, Switches, and Wall PlatesElectrical ToolsEmergency SuppliesFire SafetyHand ToolsHome SafetyLight BulbsLight TimersMechanics ToolsPersonal PreparednessPower Tool AccessoriesPower ToolsSolderingStorm & Flood PrepTestersThermostats
Relay Module(1000+)
Uses item details. Price when purchased online
Zuomeng 12V Forward and Reverse Relay Module Reliable Motor Control for Tarp Systems, Hoists, Winches, and More – Bidirectional Switch for AC/DC Motors $26.99
Sponsored
$2699
current price $26.99Zuomeng 12V Forward and Reverse Relay Module Reliable Motor Control for Tarp Systems, Hoists, Winches, and More – Bidirectional Switch for AC/DC Motors
DPST 1NO 1NC 8Amp Power Relay Module, Briidea 24V AC/DC Power Relay Control Voltage, White $23.99
Sponsored
$2399
current price $23.99DPST 1NO 1NC 8Amp Power Relay Module, Briidea 24V AC/DC Power Relay Control Voltage, White
Shelly Wave Pro 1 US Z-Wave 800 & Z-Wave LR Relay Module $62.24 Was $82.99
Sponsored
Now$6224
current price Now $62.24, Was $82.99$82.99
Shelly Wave Pro 1 US Z-Wave 800 & Z-Wave LR Relay Module
Shelly Pro 2 Wi-Fi & Bluetooth Relay Module $67.99 Was $84.99
Sponsored
Now$6799
current price Now $67.99, Was $84.99$84.99
Shelly Pro 2 Wi-Fi & Bluetooth Relay Module
34.7 out of 5 Stars. 3 reviews
NFTIGB DC 12V Voltage Detection Relay Module 0 to 99.9V Monitoring Range with LED Display, Upper Lower Limit Detection for Industrial Automation, 1 Pack (13 inches / 33.0 cm) $11.94
$1194
current price $11.94NFTIGB DC 12V Voltage Detection Relay Module 0 to 99.9V Monitoring Range with LED Display, Upper Lower Limit Detection for Industrial Automation, 1 Pack (13 inches / 33.0 cm)
Riousery DC 12V 1-Channel High Level Trigger Solid State Relay Module 250VAC 2A Output with Fuse, 1.57 inches / 4 cm
2 options
Available in additional 2 optionsRiousery DC 12V 1-Channel High Level Trigger Solid State Relay Module 250VAC 2A Output with Fuse, 1.57 inches / 4 cm
M Buder 12V Electrical System Relay Module 5 Time Periods 24H Delay Timer Switch Controller Board with Buzzer Warning $14.16
$1416
current price $14.16M Buder 12V Electrical System Relay Module 5 Time Periods 24H Delay Timer Switch Controller Board with Buzzer Warning
M Buder 4 Channel 30A Relay Module High Low Level Trigger with Optocoupler Isolation 12V Electrical Circuit Control Board 5.1 x 2.8 x 0.9 inches / 129 x 72 x 22 mm
2 options
Available in additional 2 optionsM Buder 4 Channel 30A Relay Module High Low Level Trigger with Optocoupler Isolation 12V Electrical Circuit Control Board 5.1 x 2.8 x 0.9 inches / 129 x 72 x 22 mm
NFTIGB HY-M283 5V 4 Channel Solid State Relay Module with Fuse, Low Level Trigger Relay Board for DIY Electronics Enthusiasts, 240V 2A Load Capacity, 1.8x2.0 Inches Dual Unit Compatibility $12.63
$1263
current price $12.63NFTIGB HY-M283 5V 4 Channel Solid State Relay Module with Fuse, Low Level Trigger Relay Board for DIY Electronics Enthusiasts, 240V 2A Load Capacity, 1.8x2.0 Inches Dual Unit Compatibility
BESTYASH NE555 Adjustable Delay Timer Relay Module 0-10 Seconds DC 12V Multi-Color for Home Electronics Projects $7.79
$779
current price $7.79BESTYASH NE555 Adjustable Delay Timer Relay Module 0-10 Seconds DC 12V Multi-Color for Home Electronics Projects
Shelly Wave i4 DC US Multi-Input Control Module, Z-Wave 800 & Z-Wave LR $25.49 Was $33.99
Sponsored
Now$2549
current price Now $25.49, Was $33.99$33.99
Shelly Wave i4 DC US Multi-Input Control Module, Z-Wave 800 & Z-Wave LR
Uxcell 1 Pcs DC 12V 1 Channel Relay Module Switch Board Shield 30A High or Low Level Trigger $10.74
Sponsored
$1074
current price $10.74Uxcell 1 Pcs DC 12V 1 Channel Relay Module Switch Board Shield 30A High or Low Level Trigger
NFTIGB Drive Free Relay Module Plug and Play HID Computer Intelligent USB Control Switch for PC Smart Controller, 1 Channel 5V Relay Board for Home Automation Systems (3.93 inches / 10 cm) $9.27
$927
current price $9.27NFTIGB Drive Free Relay Module Plug and Play HID Computer Intelligent USB Control Switch for PC Smart Controller, 1 Channel 5V Relay Board for Home Automation Systems (3.93 inches / 10 cm)
Osfvolr 4 Channel Relay Module 5V 12V Board Shield with Optocoupler Isolation Support High and Low Level Trigger 12V $8.09
$809
current price $8.09Osfvolr 4 Channel Relay Module 5V 12V Board Shield with Optocoupler Isolation Support High and Low Level Trigger 12V
NFTIGB 5V 8 Channel Solid State Relay Module with Fuse, High Level Trigger, 2A - 11.0 inches / 27.9 cm $16.64
$1664
current price $16.64NFTIGB 5V 8 Channel Solid State Relay Module with Fuse, High Level Trigger, 2A - 11.0 inches / 27.9 cm
M Buder MRA-48D3 Ultra Thin 6.2mm AC Solid State Relay Module, 4-32V DC Input and 480V AC 3A Output PLC Relay with LED State Indicator, High Isolation Voltage Protective Shell Relay, 1 Pack $17.92
$1792
current price $17.92M Buder MRA-48D3 Ultra Thin 6.2mm AC Solid State Relay Module, 4-32V DC Input and 480V AC 3A Output PLC Relay with LED State Indicator, High Isolation Voltage Protective Shell Relay, 1 Pack
Riousery ACC Trigger Delay Power Off Switch Relay Module DC12V Time Delay Electrical System Relay PCB Board with Shell Control Port $10.97
$1097
current price $10.97Riousery ACC Trigger Delay Power Off Switch Relay Module DC12V Time Delay Electrical System Relay PCB Board with Shell Control Port
Riousery 1 Channel Optocoupler Relay Module Board High & Low Trigger 5V Replacement Electrical System Control High Capacity Load AC 250V 10A DC 30V 10A Fault Tolerant Green Red LED Indicator From $7.42
3 options
Available in additional 3 optionsFrom$742
Riousery 1 Channel Optocoupler Relay Module Board High & Low Trigger 5V Replacement Electrical System Control High Capacity Load AC 250V 10A DC 30V 10A Fault Tolerant Green Red LED Indicator
NFTIGB Dual Channel Bluetooth Relay Module 12V DC Remote Control Switch Board for Smart Home Automation IOT Wireless System (0.51 lbs / 231 g, 5.1 x 3.5 x 1.2 inches) $18.71
$1871
current price $18.71NFTIGB Dual Channel Bluetooth Relay Module 12V DC Remote Control Switch Board for Smart Home Automation IOT Wireless System (0.51 lbs / 231 g, 5.1 x 3.5 x 1.2 inches)
Riousery 12V 16 Channel RS485 Relay Module Modbus RTU Protocol Remote Control PCB Board for PLC Extension Industrial Components 9.05 inches / 23 cm $32.80
$3280
current price $32.80Riousery 12V 16 Channel RS485 Relay Module Modbus RTU Protocol Remote Control PCB Board for PLC Extension Industrial Components 9.05 inches / 23 cm
Woudy Genuine Fuel Pump Main Relay 39400-SM4-003 for Civic Accord Acura 1992-2001 $18.99
Sponsored
$1899
current price $18.99Woudy Genuine Fuel Pump Main Relay 39400-SM4-003 for Civic Accord Acura 1992-2001
14 out of 5 Stars. 1 reviews
Clearance NURATIT Fuel Pump Main Relay 39400-SM4-003 for Honda Civic Accord Acura 1992-2001, Direct Fit OEM Quality $23.99 Was $53.97
Clearance
Sponsored
Now$2399
current price Now $23.99, Was $53.97$53.97
NURATIT Fuel Pump Main Relay 39400-SM4-003 for Honda Civic Accord Acura 1992-2001, Direct Fit OEM Quality
Dualoai 2-Channel Relay Module With Optocoupler for Automation Equipment Control $9.12
$912
current price $9.12Dualoai 2-Channel Relay Module With Optocoupler for Automation Equipment Control
BIMZUC 8 Channel Optocoupler Relay Module Board High & Low Trigger 24V Heavy Duty Electrical System Relays for Industrial Controls and Home Automation, 5.6 x 2 x 0.7 inches / 141.5 x 50 x 18.5 mm $14.19
$1419
current price $14.19BIMZUC 8 Channel Optocoupler Relay Module Board High & Low Trigger 24V Heavy Duty Electrical System Relays for Industrial Controls and Home Automation, 5.6 x 2 x 0.7 inches / 141.5 x 50 x 18.5 mm
NFTIGB 4 Channel Wireless Relay Module 4DI 4DO 433M RS485 Transmitter Receiver Relay with Antenna DC 12V 5.7 inches / 144 mm Industrial Home Automation Control Switch Board System
NFTIGB 4 Channel Wireless Relay Module 4DI 4DO 433M RS485 Transmitter Receiver Relay with Antenna DC 12V 5.7 inches / 144 mm Industrial Home Automation Control Switch Board System
Reduced price Dualoai Relay Shield Module, 4 Channel 5V Relay Module with Optocoupler for PLC Control $7.20 Was $11.20
Reduced price
Now$720
current price Now $7.20, Was $11.20$11.20
Dualoai Relay Shield Module, 4 Channel 5V Relay Module with Optocoupler for PLC Control
M Buder 8 Channel Optocoupler Relay Module Board High & Low Level Trigger 24V AC 250V 10A DC 30V 10A Fault-Tolerant Design for Electrical Systems and Industrial Control Applications From $12.05
3 options
Available in additional 3 optionsFrom$1205
M Buder 8 Channel Optocoupler Relay Module Board High & Low Level Trigger 24V AC 250V 10A DC 30V 10A Fault-Tolerant Design for Electrical Systems and Industrial Control Applications
Riousery JK02 Relay Switch Module DC12V Trigger Timer Turn Off Switch Board Module (12 inches / 30.5 cm) $8.84
$884
current price $8.84Riousery JK02 Relay Switch Module DC12V Trigger Timer Turn Off Switch Board Module (12 inches / 30.5 cm)
APPLAYERR 6Pin 12V LED Flasher Relay Control Module Plastic for Accord Acura TL TSX MDX Odyssey Ridgeline 2003-2014 $11.95
$1195
current price $11.95APPLAYERR 6Pin 12V LED Flasher Relay Control Module Plastic for Accord Acura TL TSX MDX Odyssey Ridgeline 2003-2014
Suodoka NE555 Relay Module Adjustable 0-10 Second Time Delay Relay Switch Module 5V DC Mini Electromechanical Controller Timer for Electronic DIY Projects and Power Cycle Control (2 Pcs / Pack) $9.36
$936
current price $9.36Suodoka NE555 Relay Module Adjustable 0-10 Second Time Delay Relay Switch Module 5V DC Mini Electromechanical Controller Timer for Electronic DIY Projects and Power Cycle Control (2 Pcs / Pack)
Rayne's World 80A AA (AC to AC) Solid State Relay Module, Single Phase SSR, 70-280VAC Control, 24–480VAC Load, Panel Mount, Industrial Automation Switch From $16.99
Sponsored
From$1699
Rayne's World 80A AA (AC to AC) Solid State Relay Module, Single Phase SSR, 70-280VAC Control, 24–480VAC Load, Panel Mount, Industrial Automation Switch
FOR Chevy GMC Cadillac Hummer 2003-2007 Hazard Warning and Turn Signal Flasher, Fix Hyper Flash,for GMT800 Platform LM487 10383321 15764135 15231201 LED Flasher Relay Turn Signal $18.99
Sponsored
$1899
current price $18.99FOR Chevy GMC Cadillac Hummer 2003-2007 Hazard Warning and Turn Signal Flasher, Fix Hyper Flash,for GMT800 Platform LM487 10383321 15764135 15231201 LED Flasher Relay Turn Signal
250V/10A 1 Channel SPDT Power Relay Module 5V Control for Arduino DIY PIC AVR DSP ARM MCU $6.39
$639
current price $6.39250V/10A 1 Channel SPDT Power Relay Module 5V Control for Arduino DIY PIC AVR DSP ARM MCU
BIMZUC IP Network Relay Module Upgraded 2 Channel Internet Watchdog Remote Control Board DC12V Maximum Load DC 5A AC 10A 250V Electrical System Relays for Smart Home Automation (3.54 inches / 9 cm) $40.81
$4081
current price $40.81BIMZUC IP Network Relay Module Upgraded 2 Channel Internet Watchdog Remote Control Board DC12V Maximum Load DC 5A AC 10A 250V Electrical System Relays for Smart Home Automation (3.54 inches / 9 cm)
Rayne's World 16A DA (DC to AC) Solid State Relay Module, Single Phase SSR, 3–32VDC Control, 24–480VAC Load, Panel Mount, Industrial Automation Switch From $12.99
7 options
Available in additional 7 optionsFrom$1299
Rayne's World 16A DA (DC to AC) Solid State Relay Module, Single Phase SSR, 3–32VDC Control, 24–480VAC Load, Panel Mount, Industrial Automation Switch
DC12V Adjustable Infinite Cycle Loop Delay Timer Time Relay Switch ON/OFF Module $10.32
$1032
current price $10.32DC12V Adjustable Infinite Cycle Loop Delay Timer Time Relay Switch ON/OFF Module
BIMZUC DC 12V Relay DIN Rail Mount 4-Channel 16A Power Relay Interface Module, Pluggable Relay Board Compatible with NPN / PNP Control Systems (3.03 x 3.35 x 2.6 inches / 7.7 x 8.5 x 6.5 cm) $31.64
$3164
current price $31.64BIMZUC DC 12V Relay DIN Rail Mount 4-Channel 16A Power Relay Interface Module, Pluggable Relay Board Compatible with NPN / PNP Control Systems (3.03 x 3.35 x 2.6 inches / 7.7 x 8.5 x 6.5 cm)
2 Pieces Single-Phase Solid State Relay Module Ssr-40Da 3-32Vdc Output 24-380Vac $9.99 Was $14.29
Now$999
current price Now $9.99, Was $14.29$14.29
2 Pieces Single-Phase Solid State Relay Module Ssr-40Da 3-32Vdc Output 24-380Vac
Bluetooth Proximity Switch 1 Channel Relay Module Automatically Senses When the Phone Approaches to Unlock $9.64
$964
current price $9.64Bluetooth Proximity Switch 1 Channel Relay Module Automatically Senses When the Phone Approaches to Unlock
15 out of 5 Stars. 1 reviews
1 Channel Relay Module DC 24V RS485 Modbus RTU Board with Protective Shell, 4.7 x 3.9 x 1.6 inches / 12 x 10 x 4 cm $18.41
$1841
current price $18.411 Channel Relay Module DC 24V RS485 Modbus RTU Board with Protective Shell, 4.7 x 3.9 x 1.6 inches / 12 x 10 x 4 cm
Clearance Universal Wireless Remote Control Receiver Relay Module, 12V DC, 315/433MHz RF Transmitter for Smart Home Automation $6.40 Was $8.23
Clearance
Now$640
current price Now $6.40, Was $8.23$8.23
Universal Wireless Remote Control Receiver Relay Module, 12V DC, 315/433MHz RF Transmitter for Smart Home Automation
15 out of 5 Stars. 1 reviews
Reduced price Relay Module WIFI 8Channel ESP8266 Development Board for Wireless Control DC 728V / 5V $18.73 Was $23.41
Reduced price
Now$1873
current price Now $18.73, Was $23.41$23.41
Relay Module WIFI 8Channel ESP8266 Development Board for Wireless Control DC 728V / 5V
Relay Module 5V 8 Channel Switch Relay Board with Optocoupler Isolation 8 Ways $8.95
$895
current price $8.95Relay Module 5V 8 Channel Switch Relay Board with Optocoupler Isolation 8 Ways
Dualoai 8 Channel Relay Module Optocoupler Isolated Relay 12V 10A Opto Relay Board $12.99
$1299
current price $12.99Dualoai 8 Channel Relay Module Optocoupler Isolated Relay 12V 10A Opto Relay Board
NFTIGB RS485 1 Channel Relay Module 12V DC PLC Controller Serial Port MODBUS RTU Multi-functional Industrial Switch Relay Board, 1.77 x 1.18 x 0.71 inches / 45 x 30 x 18 mm $13.25
$1325
current price $13.25NFTIGB RS485 1 Channel Relay Module 12V DC PLC Controller Serial Port MODBUS RTU Multi-functional Industrial Switch Relay Board, 1.77 x 1.18 x 0.71 inches / 45 x 30 x 18 mm
DC 12V 1 Channel Relay Module FRM01 Multifunction Relay Loop Delay Timer Switch Self-Locking Timing Board,1 * FRM01 12V multi-function relay control module $9.09
$909
current price $9.09DC 12V 1 Channel Relay Module FRM01 Multifunction Relay Loop Delay Timer Switch Self-Locking Timing Board,1 * FRM01 12V multi-function relay control module
Zuomeng 12V Forward and Reverse Relay Module Reliable Motor Control for Tarp Systems, Hoists, Winches, and More Bidirectional Switch for AC/DC Motors $26.99
$2699
current price $26.99Zuomeng 12V Forward and Reverse Relay Module Reliable Motor Control for Tarp Systems, Hoists, Winches, and More Bidirectional Switch for AC/DC Motors
Hardware Tools 2A Solid State Relay Module, Small Body Solid State Relay Module with for Industry $17.18
$1718
current price $17.18Hardware Tools 2A Solid State Relay Module, Small Body Solid State Relay Module with for Industry
8 Channel RS485 Relay Board Module Programmable Industrial Automation DC 12V Electrical Switch Control Receiver Component, 3.54 x 2.48 x 0.7 inches / 9.0 x 6.3 x 1.8 cm $24.35
$2435
current price $24.358 Channel RS485 Relay Board Module Programmable Industrial Automation DC 12V Electrical Switch Control Receiver Component, 3.54 x 2.48 x 0.7 inches / 9.0 x 6.3 x 1.8 cm
Dualoai 3V 1 Channel High Level Relay Module with Optocoupler Isolation for $9.01
$901
current price $9.01Dualoai 3V 1 Channel High Level Relay Module with Optocoupler Isolation for
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