Communications Relay(32)
Uses item details. Price when purchased online
Best seller, Alla Lighting 12V Heavy Duty 2 Pin Electronic LED Compatible Turn Signal Flasher Relay- Fits Motors Turn Signal & Hazard Warning From $9.00
Best seller
Sponsored
From$900
Alla Lighting 12V Heavy Duty 2 Pin Electronic LED Compatible Turn Signal Flasher Relay- Fits Motors Turn Signal & Hazard Warning
4.4 out of 5 stars
HOPUT Forward and Reverse Relay Module, Replaces 5541100 ATP0110 24452 | For Tarp or Winch Motor, Snow Plow & Lift, Six Terminal, Pack of 1 $27.99
Sponsored
$2799
current price $27.99HOPUT Forward and Reverse Relay Module, Replaces 5541100 ATP0110 24452 | For Tarp or Winch Motor, Snow Plow & Lift, Six Terminal, Pack of 1
Waterproof DC 48V 40A SPDT Automotive Car Relay 5 Pin 5 Wires w/ Harness Socket $9.99
Sponsored
$999
current price $9.99Waterproof DC 48V 40A SPDT Automotive Car Relay 5 Pin 5 Wires w/ Harness Socket
Best seller, Shelly Wi-Fi 1 Mini Gen3 Smart Relay (Gen 3 1 Mini) $11.89
Best seller
Sponsored
$1189
current price $11.89Shelly Wi-Fi 1 Mini Gen3 Smart Relay (Gen 3 1 Mini)
4.7 out of 5 stars
1 Channel Relay Module with Optocoupler Isolation, 12V High/Low Level Trigger Relay Board 10A Load Capacity for Arduino Industrial Control (1 Channel 12V) From $8.51
From$851
1 Channel Relay Module with Optocoupler Isolation, 12V High/Low Level Trigger Relay Board 10A Load Capacity for Arduino Industrial Control (1 Channel 12V)
5 out of 5 stars
Functional Devices RIBH1C Grey, 10 Amp Enclosed Electrical System Relay $38.99
$3899
current price $38.99Functional Devices RIBH1C Grey, 10 Amp Enclosed Electrical System Relay
For Tuya For WiFi Switch Relay Relay Module White 12V Multi Functional $15.77
$1577
current price $15.77For Tuya For WiFi Switch Relay Relay Module White 12V Multi Functional
12V 24V 2CH 433Mhz Wireless RF Relay Remote Control Switch Receiver Module HOT $18.88
$1888
current price $18.8812V 24V 2CH 433Mhz Wireless RF Relay Remote Control Switch Receiver Module HOT
3 out of 5 stars
Modbus-Rtu 8 Channel Relay Module Modbus RTU 8 Switch Input RS485 Communication TTL $16.83
$1683
current price $16.83Modbus-Rtu 8 Channel Relay Module Modbus RTU 8 Switch Input RS485 Communication TTL
Voice Activated Relay $150.22
$15022
current price $150.22Voice Activated Relay
Shelly 1PM Mini Gen3 | WiFi & Bluetooth Smart Switch Relay, 1 Channel 8A with Power Measurement | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub Required (2 Pack) $24.43 Was $31.49
Sponsored
Now$2443
current price Now $24.43, Was $31.49$31.49
Shelly 1PM Mini Gen3 | WiFi & Bluetooth Smart Switch Relay, 1 Channel 8A with Power Measurement | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub Required (2 Pack)
5 out of 5 stars
2 Pack 5V 1 Channel Relay Module with Optocoupler Isolation, High/Low Level Trigger Relay Switch Module $10.99
Sponsored
$1099
current price $10.992 Pack 5V 1 Channel Relay Module with Optocoupler Isolation, High/Low Level Trigger Relay Switch Module
Best seller, Shelly Wi-Fi 1 Mini Gen3 Smart Relay (Gen 3 1 Mini) $11.89
Best seller
$1189
current price $11.89Shelly Wi-Fi 1 Mini Gen3 Smart Relay (Gen 3 1 Mini)
4.7 out of 5 stars
Modbus Rtu 4 Relay Module Input 485 Ttl Uart Communication 4-Channel Input 7-24V Relay Module $11.28
$1128
current price $11.28Modbus Rtu 4 Relay Module Input 485 Ttl Uart Communication 4-Channel Input 7-24V Relay Module
Shelly 1PM Mini Gen3 | WiFi & Bluetooth Smart Switch Relay, 1 Channel 8A with Power Measurement | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub Required (2 Pack) $24.43 Was $31.49
Now$2443
current price Now $24.43, Was $31.49$31.49
Shelly 1PM Mini Gen3 | WiFi & Bluetooth Smart Switch Relay, 1 Channel 8A with Power Measurement | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub Required (2 Pack)
5 out of 5 stars
8 Channel Relay Module 8CH Input Output RS485 TTL Communication Interface DC 12V Smart Home Automation Board (5.6 in / 14.3 cm) $21.11
$2111
current price $21.118 Channel Relay Module 8CH Input Output RS485 TTL Communication Interface DC 12V Smart Home Automation Board (5.6 in / 14.3 cm)
Shelly 2PM Gen4 16A 2-Channel (2x10A) Smart Relay with Power Measurement (Wi-Fi, Matter & Zigbee) $38.99
$3899
current price $38.99Shelly 2PM Gen4 16A 2-Channel (2x10A) Smart Relay with Power Measurement (Wi-Fi, Matter & Zigbee)
4.6 out of 5 stars
7-24V 2 Channel Relay Module Switch Modbus RTU RS485/TTL Communication Input Output with Anti-Reverse Protection $9.95
$995
current price $9.957-24V 2 Channel Relay Module Switch Modbus RTU RS485/TTL Communication Input Output with Anti-Reverse Protection
2X Modbus RTU 4 Way Relay Module 7-24V Relay Module Switch RS485/TTL Input and Output with Anti Reverse Protection,2 x Relay Module,Blue $17.09
$1709
current price $17.092X Modbus RTU 4 Way Relay Module 7-24V Relay Module Switch RS485/TTL Input and Output with Anti Reverse Protection,2 x Relay Module,Blue
7-24V 2 Channel Relay Module Switch Modbus RTU RS485/TTL Communication Input Output with Anti-Reverse Protection,1 set * 2-way relay modules $10.49
$1049
current price $10.497-24V 2 Channel Relay Module Switch Modbus RTU RS485/TTL Communication Input Output with Anti-Reverse Protection,1 set * 2-way relay modules
CarLights360 For Chevy Sonic 2012 2013 2014 Relay | Blade Terminal | Square Connector | Relay Functions | Replacement For 13500118, 13598347 $26.09
Sponsored
$2609
current price $26.09CarLights360 For Chevy Sonic 2012 2013 2014 Relay | Blade Terminal | Square Connector | Relay Functions | Replacement For 13500118, 13598347
CarLights360 For Buick Regal 2011-2017 Relay | Blade Terminal | Square Connector | Relay Functions | Replacement For 13500118, 13598347 $26.09
Sponsored
$2609
current price $26.09CarLights360 For Buick Regal 2011-2017 Relay | Blade Terminal | Square Connector | Relay Functions | Replacement For 13500118, 13598347
1pc 12V 1/2/4/8 Channel Solid State Relay Module With Fuse Protection Function For PLC Automation Control IoT Applications
1pc 12V 1/2/4/8 Channel Solid State Relay Module With Fuse Protection Function For PLC Automation Control IoT Applications
1pcs Modbus-rtu 2-Way Relay Module Output 2 Input Channel Switch TTL / RS485 Communication Interface 12V $13.66
$1366
current price $13.661pcs Modbus-rtu 2-Way Relay Module Output 2 Input Channel Switch TTL / RS485 Communication Interface 12V
Clearance, MoVehGear 12V 40A SPST 4-Pin Automotive Relay with Cable for Car Boat Bike Alarm HID Headlight Fan Horn $8.29 Was $10.59
Now$829
current price Now $8.29, Was $10.59$10.59
MoVehGear 12V 40A SPST 4-Pin Automotive Relay with Cable for Car Boat Bike Alarm HID Headlight Fan Horn
Bogen Avad RIO1S Relay/input/output Module Accs $116.37
$11637
current price $116.37Bogen Avad RIO1S Relay/input/output Module Accs
4-Channel Relay Module 12V High Accuracy Switch Input for RS485 TTL Communication $13.98
$1398
current price $13.984-Channel Relay Module 12V High Accuracy Switch Input for RS485 TTL Communication
JIhuahe Dual Channel Wireless Relay Switch 30A - AC90-250V Heavy Duty Remote Control System with 2 Transmitters for Industrial Devices,black $8.96
$896
current price $8.96JIhuahe Dual Channel Wireless Relay Switch 30A - AC90-250V Heavy Duty Remote Control System with 2 Transmitters for Industrial Devices,black
5 out of 5 stars
Universal Wireless Remote Control Receiver Relay Module, 12V DC, 315/433MHz RF Transmitter for Smart Home Automation $6.40
$640
current price $6.40Universal Wireless Remote Control Receiver Relay Module, 12V DC, 315/433MHz RF Transmitter for Smart Home Automation
5 out of 5 stars
850067590156 $230.80
$23080
current price $230.80850067590156
CarLights360 For Honda Odyssey 2005-2022 Relay | Blade Terminal | Rectangular Connector | Relay Functions | 1 Male Terminal | Replacement For 39792SDAA01 $31.66
Sponsored
$3166
current price $31.66CarLights360 For Honda Odyssey 2005-2022 Relay | Blade Terminal | Rectangular Connector | Relay Functions | 1 Male Terminal | Replacement For 39792SDAA01
CarLights360 For Acura RL 2005-2012 Relay | Blade Terminal | Rectangular Connector | Relay Functions | 1 Male Terminal | Replacement For 39792SDAA01 $31.66
Sponsored
$3166
current price $31.66CarLights360 For Acura RL 2005-2012 Relay | Blade Terminal | Rectangular Connector | Relay Functions | 1 Male Terminal | Replacement For 39792SDAA01
Other options to consider(131)
2 Pack 5V 1 Channel Relay Module with Optocoupler Isolation, High/Low Level Trigger Relay Switch Module $10.99
$1099
current price $10.992 Pack 5V 1 Channel Relay Module with Optocoupler Isolation, High/Low Level Trigger Relay Switch Module
Hella 933332641 Multi-Purpose Relay $10.68
$1068
current price $10.68Hella 933332641 Multi-Purpose Relay
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 $13.76
$1376
current price $13.76NFTIGB 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
12V 100A Continuous Duty Solenoid Relay 24059BX for Cole Hersee $17.50
$1750
current price $17.5012V 100A Continuous Duty Solenoid Relay 24059BX for Cole Hersee
Soumake DC 12V Car SPDT Automotive Relay 5 Pin 5 Wires with Harness Socket 30/40 Amp $8.26
$826
current price $8.26Soumake DC 12V Car SPDT Automotive Relay 5 Pin 5 Wires with Harness Socket 30/40 Amp
Schneider Electric 1-P 25A Solid State Relay SSP1D425BDT $29.99
$2999
current price $29.99Schneider Electric 1-P 25A Solid State Relay SSP1D425BDT
NVX XSBI200 Dual Sensing Smart Relay Battery Isolator Microprocessor-Controlled 200 Amp $49.99
$4999
current price $49.99NVX XSBI200 Dual Sensing Smart Relay Battery Isolator Microprocessor-Controlled 200 Amp
4.6 out of 5 stars
Projects Ready: 4-Channel Relay Module with Optocoupler Isolation, 5V/12V/24V, High or Low Level Trigger $8.52
$852
current price $8.52Projects Ready: 4-Channel Relay Module with Optocoupler Isolation, 5V/12V/24V, High or Low Level Trigger
GM GenuineACDelco 13503102 Gray 12 Volts 2H Electrical System Relay $17.30
$1730
current price $17.30GM GenuineACDelco 13503102 Gray 12 Volts 2H Electrical System Relay
4.7 out of 5 stars
VEVOR SplitCharge Relay Kit, 6mtr 12V, Automatic Dual Battery Isolator Kit with 140AMP Voltage Sense Relay VSR $58.90 $58.90/ca
$5890
current price $58.90$58.90/ca
VEVOR SplitCharge Relay Kit, 6mtr 12V, Automatic Dual Battery Isolator Kit with 140AMP Voltage Sense Relay VSR
5 out of 5 stars
Gamewell-FCI AOM-2RF Velociti Seies Addressable Output Relay Control Module $83.00
$8300
current price $83.00Gamewell-FCI AOM-2RF Velociti Seies Addressable Output Relay Control Module
Niche 519-CSS2256L Black 12V, 30A Electrical System Relay $13.95
$1395
current price $13.95Niche 519-CSS2256L Black 12V, 30A Electrical System Relay
5 out of 5 stars
Automotive Relay 303-1AH-C-R1 U01 12VDC 4pin $12.03
$1203
current price $12.03Automotive Relay 303-1AH-C-R1 U01 12VDC 4pin
Automotive 5-Pin 30/40A 12V SPDT Relays with Interlocking Relay Sockets and in-Line ATC Fuse Holders $15.11
$1511
current price $15.11Automotive 5-Pin 30/40A 12V SPDT Relays with Interlocking Relay Sockets and in-Line ATC Fuse Holders
4.5 out of 5 stars
Anxingo 2Pack JD2912 24V 40A 4PIN Relay with Harness and Socket Plug Color-Labeled Wires for Automotive Truck Van Motorcycle Boat $12.99
$1299
current price $12.99Anxingo 2Pack JD2912 24V 40A 4PIN Relay with Harness and Socket Plug Color-Labeled Wires for Automotive Truck Van Motorcycle Boat
2.3 out of 5 stars
4-PIN 12V DC IP65 Waterproof Relay with Harness 40/30 AMP Relay Switch - Heavy Duty 12&16 AWG Tinned Copper Wires, SPST Automotive Relay Kit for Horns Starters Radiator Motor Fans, Pack of 1 $12.98
$1298
current price $12.984-PIN 12V DC IP65 Waterproof Relay with Harness 40/30 AMP Relay Switch - Heavy Duty 12&16 AWG Tinned Copper Wires, SPST Automotive Relay Kit for Horns Starters Radiator Motor Fans, Pack of 1
9038 Relay Bypass Switch, Relay Bypass Switch Kit, Replacement 9036 9037, Fit for Domestic GM BMW, Audi, Chrysler, 6-Pack, Black $9.78
$978
current price $9.789038 Relay Bypass Switch, Relay Bypass Switch Kit, Replacement 9036 9037, Fit for Domestic GM BMW, Audi, Chrysler, 6-Pack, Black
CBB61 Electrical Power Relay Connecting Capacitor 4.5uf+6uf+5uf 250V 5 Wire $7.91
$791
current price $7.91CBB61 Electrical Power Relay Connecting Capacitor 4.5uf+6uf+5uf 250V 5 Wire
4 out of 5 stars