Shop relay module vs optical

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$195.20
385201250060 FINDER Relay Interface Module
Standard Electric Supply Co.
$195.20
385201250060 FINDER Relay Interface Module
Standard Electric Supply Co.
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
76
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
$31.99
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Sainsmart 16-Channel 9-36V USB Relay Module
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Amazon.com
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5V/12V 3 Channel Relay Module Is Equipped With Optical Coupler To Isolate The 3.3V And 5V Signals Of
AliExpress
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5V/12V 3 Channel Relay Module Is Equipped With Optical Coupler To Isolate The 3.3V And 5V Signals Of
AliExpress
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1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
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1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
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1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$1.58
1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$74.99
Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
Amazon.com
Free shipping
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Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
Amazon.com
$49.50
Notifier FRM-1 - Control Relay Module
Amazon.com
14
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Notifier FRM-1 - Control Relay Module
Amazon.com
$0.78
2 Channel Relay Module 5V 12V 24V High And Low Level Trigger Relay Control With Optocoupler Two Way
AliExpress
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2 Channel Relay Module 5V 12V 24V High And Low Level Trigger Relay Control With Optocoupler Two Way
AliExpress
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5V 12V 24V Relay Module With Optocoupler Relay Output 1/2/4/6/8Way Relay Module For Arduino PLC
AliExpress
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5V 12V 24V Relay Module With Optocoupler Relay Output 1/2/4/6/8Way Relay Module For Arduino PLC
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1 Channel 5V 9V 12V 24V Relay Module Board Shield With Optocoupler 12V Relay Module Support High And
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Hodges Marine
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AXIS A9188 Network I/O Relay Module - 0820-001
A1 Security Cameras
$642.19
AXIS A9188 Network I/O Relay Module - 0820-001
A1 Security Cameras
$88.03
$118.00
Bennett Marine Relay Module 12V By Hodges Marine
Hodges Marine
7
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$118.00
Bennett Marine Relay Module 12V By Hodges Marine
Hodges Marine
$249.99
Fireboy-Xintex CO Alarm Relay Control Module | By West Marine
WestMarine
Free shipping
$249.99
Fireboy-Xintex CO Alarm Relay Control Module | By West Marine
WestMarine
$91.75
MSD Relay Module 2-Channel With 40 Amp Relay
CJ Pony Parts
$91.75
MSD Relay Module 2-Channel With 40 Amp Relay
CJ Pony Parts
$1.99
8 Channel Relay Module With Optocoupler Output Low Level Trigger 5V 12V 24V 2CH
Evalm
$1.99
8 Channel Relay Module With Optocoupler Output Low Level Trigger 5V 12V 24V 2CH
Evalm
$0.99
8 Channel Relay Module With Optocoupler Output Low Level Trigger 5V 12V 24V 1CH
Evalm
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8 Channel Relay Module With Optocoupler Output Low Level Trigger 5V 12V 24V 1CH
Evalm
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Altronix RB1224 Relay Module
BSA Security Integrators
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Bennett 12V Relay Module
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40 Amps, 7-20 V MSD Relay Modules | MSD Ignition 7566-1
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40 Amps, 7-20 V MSD Relay Modules | MSD Ignition 7566-1
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Honeywell NC-100R Notifier Relay Module | Furnace Part Source
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FurnacePartSource.com
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Altronix RBST Relay Module 6/12/24VDC Operation At 30Ma Draw DPDT Contacts Rated At 1A/120VAC Or 2A/28VDC
B and H Depot
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$17.00
Altronix RBST Relay Module 6/12/24VDC Operation At 30Ma Draw DPDT Contacts Rated At 1A/120VAC Or 2A/28VDC
B and H Depot
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ALTRONIX Relay Module 12/24VDC 30Ma SPDT, Relay, -, RBUL
Zoro.com
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Zoro.com
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1Pcs 1 Channel 3V Relay Module 3.3V Low Level Shooting With Lamp
Walmart
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1Pcs 1 Channel 3V Relay Module 3.3V Low Level Shooting With Lamp
Walmart
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1 Channel 3.3V Low Level Trigger Relay Module For Arduino With Optocoupler Isolation
Evalm
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1 Channel 3.3V Low Level Trigger Relay Module For Arduino With Optocoupler Isolation
Evalm
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OPTO 22 - OAC15 - SS Relay Module - Pulled From Sockets
Electronic Surplus
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OPTO 22 - OAC15 - SS Relay Module - Pulled From Sockets
Electronic Surplus
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Lutron RMJ-H20R-DV-B Powpak 20 A Relay Module 120-277 V
Electric Bargain Store
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Electric Bargain Store
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ALTRONIX Relay Module 12/24VDC 75Ma DPDT, Relay, -, RB1224
Zoro.com
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$19.59
ALTRONIX Relay Module 12/24VDC 75Ma DPDT, Relay, -, RB1224
Zoro.com
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$161.95
MSD Ignition 4-Channel Relay Module
JEGS High Performance
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MSD Ignition 4-Channel Relay Module
JEGS High Performance
$17.00
Altronix RB1224 Relay Module 12/24VDC Operation At 75Ma Draw 5A/220VAC Or 28VDC DPDT Contact Rating
B and H Depot
3
$17.00
Altronix RB1224 Relay Module 12/24VDC Operation At 75Ma Draw 5A/220VAC Or 28VDC DPDT Contact Rating
B and H Depot
$91.75
$101.95
MSD Ignition 2-Channel Relay Module
JEGS High Performance
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JEGS High Performance
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Hayward Relay Module Omni Logic HLRELAY
PoolZoom.com
1
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Hayward Relay Module Omni Logic HLRELAY
PoolZoom.com
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Shop relay module vs optical

Sponsored
About our ads
$195.20
385201250060 FINDER Relay Interface Module
Standard Electric Supply Co.
$195.20
385201250060 FINDER Relay Interface Module
Standard Electric Supply Co.
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
76
$15.99
Dafurui 5V Relay Module8pack 1 Channel Relay Module 5V Relays Board With Optocoupler Support High/Low Level Trigger For Arduino Relays
Amazon.com
$31.99
$39.99
Sainsmart 16-Channel 9-36V USB Relay Module
Amazon.com
20% off
$31.99
$39.99
Sainsmart 16-Channel 9-36V USB Relay Module
Amazon.com
$1.38
$1.50
5V/12V 3 Channel Relay Module Is Equipped With Optical Coupler To Isolate The 3.3V And 5V Signals Of
AliExpress
$1.38
$1.50
5V/12V 3 Channel Relay Module Is Equipped With Optical Coupler To Isolate The 3.3V And 5V Signals Of
AliExpress
$1.37
1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$1.37
1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$1.58
1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$1.58
1 Channel 5V/12V/24V Relay Module Optical Coupling Isolation High And Low Level Trigger
AliExpress
$74.99
Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
Amazon.com
Free shipping
$74.99
Waveshare Modbus RTU 32-Ch Relay Module, RS485 Interface, With Multiple Isolation Protection Circuits, Industrial-Grade, Rail-Mount Case
Amazon.com
$49.50
Notifier FRM-1 - Control Relay Module
Amazon.com
14
Free shipping
$49.50
Notifier FRM-1 - Control Relay Module
Amazon.com
$0.78
2 Channel Relay Module 5V 12V 24V High And Low Level Trigger Relay Control With Optocoupler Two Way
AliExpress
$0.78
2 Channel Relay Module 5V 12V 24V High And Low Level Trigger Relay Control With Optocoupler Two Way
AliExpress
$1.87
$3.66
5V 12V 24V Relay Module With Optocoupler Relay Output 1/2/4/6/8Way Relay Module For Arduino PLC
AliExpress
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$1.87
$3.66
5V 12V 24V Relay Module With Optocoupler Relay Output 1/2/4/6/8Way Relay Module For Arduino PLC
AliExpress
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$6.02
4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
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4 Channel Optocoupler Relay Module Board High & Low Trigger Relay Module 5V/12V/24V
AliExpress
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AliExpress
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6 Channel Relay Module 5V 12V 24V High And Low Level Trigger Relay Control With Optocoupler 6 Way
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1 Channel 5V 9V 12V 24V Relay Module Board Shield With Optocoupler 12V Relay Module Support High And
AliExpress
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1 Channel 5V 9V 12V 24V Relay Module Board Shield With Optocoupler 12V Relay Module Support High And
AliExpress
$160.16
$198.00
Bennett Eic Relay Module 12V By Hodges Marine
Hodges Marine
2
Free shipping
19% off
$160.16
$198.00
Bennett Eic Relay Module 12V By Hodges Marine
Hodges Marine
$642.19
AXIS A9188 Network I/O Relay Module - 0820-001
A1 Security Cameras
$642.19
AXIS A9188 Network I/O Relay Module - 0820-001
A1 Security Cameras
$88.03
$118.00
Bennett Marine Relay Module 12V By Hodges Marine
Hodges Marine
7
Free shipping
25% off
$88.03
$118.00
Bennett Marine Relay Module 12V By Hodges Marine
Hodges Marine
$249.99
Fireboy-Xintex CO Alarm Relay Control Module | By West Marine
WestMarine
Free shipping
$249.99
Fireboy-Xintex CO Alarm Relay Control Module | By West Marine
WestMarine
$91.75
MSD Relay Module 2-Channel With 40 Amp Relay
CJ Pony Parts
$91.75
MSD Relay Module 2-Channel With 40 Amp Relay
CJ Pony Parts