4 Relay Sale

We carry 4 Relay at wholesale prices. Read 4 Relay reviews and deep dive for more 4 Relay details.

  • EFX-TEK RC-4 Relay Control Board (With Relays)

EFX-TEK RC-4 Relay: $40.00

EFX-TEK RC-4 Relay Control Board (With Relays)

  • NRE 5V or 12V 1-2-4-8-16 Channel Relay Module Arduino ARM AVR DSP PIC PLC Relay

NRE 5V or: $36.09

NRE 5V or 12V 1-2-4-8-16 Channel Relay Module Arduino ARM AVR DSP PIC PLC Relay

  • CPU4(8)-Relay Board 920-CPU-C.4

CPU4(8)-Relay Board 920-CPU-C.4: $119.00

CPU4(8)-Relay Board 920-CPU-C.4

  • CPU4(8)-Relay Board 920-CPU-C.1

CPU4(8)-Relay Board 920-CPU-C.1: $76.00

CPU4(8)-Relay Board 920-CPU-C.1

  • 124816 Channel Relay Module Boards Optocoupler Arduino ARM AVR DSP PIC PLC

124816 Channel Relay: $36.09

124816 Channel Relay Module Boards Optocoupler Arduino ARM AVR DSP PIC PLC

  • KLEINKNECHT LE 10.078 A4 UJ 2000 RELAY MODULE

KLEINKNECHT LE 10.078: $60.00

KLEINKNECHT LE 10.078 A4 UJ 2000 RELAY MODULE

  • TSIR04B - 4 Channel Outputs 4 Optically Isolated Inputs WiFi Smartphone Relay

TSIR04B - 4: $71.00

TSIR04B - 4 Channel Outputs 4 Optically Isolated Inputs WiFi Smartphone Relay

  • 4 Channel Relay Timer Board

4 Channel Relay: $39.00

4 Channel Relay Timer Board

  • Altech AD90009 1.814 Relay Module Board Base Backplane 4-Unit wOAC5A

Altech AD90009 1.814: $48.00

Altech AD90009 1.814 Relay Module Board Base Backplane 4-Unit wOAC5A

  • 124816 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR US

124816 Channel Relay: $36.09

124816 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR US

  • ANSUL 4XZM ZONE RELAY CONTROL MODULE --SA

ANSUL 4XZM ZONE: $150.14

ANSUL 4XZM ZONE RELAY CONTROL MODULE --SA

  • 12V 1248 Channel Relay Board Module+Optocoupler LED For Arduino PiC ARM AVR

12V 1248 Channel: $38.35

12V 1248 Channel Relay Board Module+Optocoupler LED For Arduino PiC ARM AVR

  • Devantech TCP184 4 x 16A Modbus Relay

Devantech TCP184 4: $179.00

Devantech TCP184 4 x 16A Modbus Relay

  • 4-Channel SPDT Relay Controller

4-Channel SPDT Relay: $45.95

4-Channel SPDT Relay Controller

  • Eurotek 4 Channel Relay ET-MRZ0424DCSCNAR Breakout Board

Eurotek 4 Channel: $55.00

Eurotek 4 Channel Relay ET-MRZ0424DCSCNAR Breakout Board

  • Hurco Control Relay 4 Board 415-0224-905 Rev. B Used Warranty

Hurco Control Relay: $175.00

Hurco Control Relay 4 Board 415-0224-905 Rev. B Used Warranty

  • NEW! HONEYWELL OUTPUT RELAY BOARD 4DP7APX0D31

NEW! HONEYWELL OUTPUT: $149.95

NEW! HONEYWELL OUTPUT RELAY BOARD 4DP7APX0D31

  • TSRW430 4-Channel WiFi 30A Relay Board w Enclosure

TSRW430 4-Channel WiFi: $79.00

TSRW430 4-Channel WiFi 30A Relay Board w Enclosure

  • Javelin  JO308RP4  Relay Option Board

Javelin JO308RP4: $85.00

Javelin JO308RP4 Relay Option Board

  • SICK 7022756 POWER SUPPLY RELAY BOARD 24V 4-44-8036 H02-462-1027 RELAYS

SICK 7022756 POWER: $150.00

SICK 7022756 POWER SUPPLY RELAY BOARD 24V 4-44-8036 H02-462-1027 RELAYS

  • TSRB430 4-Channel Bluetooth 30A Relay Board w Enclosure

TSRB430 4-Channel Bluetooth: $69.00

TSRB430 4-Channel Bluetooth 30A Relay Board w Enclosure

  • Allen Bradley # 700-TBS24 24VDC SOLID STATE Replacement Relay Module - Set Of 4

Allen Bradley #: $48.50

Allen Bradley # 700-TBS24 24VDC SOLID STATE Replacement Relay Module - Set Of 4

  • CSM 70005KT4  M166CSMAAAA TIME DELAY RELAY

CSM 70005KT4 : $44.98

CSM 70005KT4 M166CSMAAAA TIME DELAY RELAY

  • PLC DIRECT D4-16NE3 INPUT RELAY MODULE 12-24V

PLC DIRECT D4-16NE3: $44.00

PLC DIRECT D4-16NE3 INPUT RELAY MODULE 12-24V

  • New Opto 22 G4PB24 Relay Board

New Opto 22: $80.00

New Opto 22 G4PB24 Relay Board

  • 5V or 12V 1-2-4-8-16 Channel Relay Module Arduino Raspberry PI ARM AVR DSP PIC

5V or 12V: $36.09

5V or 12V 1-2-4-8-16 Channel Relay Module Arduino Raspberry PI ARM AVR DSP PIC

  • Acrison M-4-1611 Module pack - hard contact relays 115-0732 - 60 day warranty

Acrison M-4-1611 Module: $45.00

Acrison M-4-1611 Module pack - hard contact relays 115-0732 - 60 day warranty

  • 5V or 12V 1-2-4-8-16 Channel Relay Module Arduino Raspberry PI ARM AVR

5V or 12V: $66.19

5V or 12V 1-2-4-8-16 Channel Relay Module Arduino Raspberry PI ARM AVR

  • YAMATAKE-HONEYWELL DIGITAL OUTPUT RELAY 4-03-3796-6265 80366190-100 NEW

YAMATAKE-HONEYWELL DIGITAL OUTPUT: $200.92

YAMATAKE-HONEYWELL DIGITAL OUTPUT RELAY 4-03-3796-6265 80366190-100 NEW

  • 4 Channel Analog Input Relay Controller Board

4 Channel Analog: $39.00

4 Channel Analog Input Relay Controller Board

  • Phidgets Relay Interface Kit 004

Phidgets Relay Interface: $55.00

Phidgets Relay Interface Kit 004

  • Lot of 4 - LUTZE VarioCompact Relay Module 38105144 (x2) & 38105088 (x2)

Lot of 4: $37.00

Lot of 4 - LUTZE VarioCompact Relay Module 38105144 (x2) & 38105088 (x2)

  • OPTO 22G4PB24 Relay Board With G4 ODC5MA (Qt: 12) & G4 INC5D (Qt:11)

OPTO 22G4PB24 Relay: $99.00

OPTO 22G4PB24 Relay Board With G4 ODC5MA (Qt: 12) & G4 INC5D (Qt:11)

  • Hurco Control Relay 4 Board 415-0224-905 Rev. B Used WARRANTY

Hurco Control Relay: $124.00

Hurco Control Relay 4 Board 415-0224-905 Rev. B Used WARRANTY

  • WEIDMULLER 4-20MA RELAY MODULE RS 116916

WEIDMULLER 4-20MA RELAY: $83.50

WEIDMULLER 4-20MA RELAY MODULE RS 116916

  • Opto 22 G4IDC5D Input Relay Modules 2.5-28VDC 5 Volt Logic New Old St (Lot of 5)

Opto 22 G4IDC5D: $39.99

Opto 22 G4IDC5D Input Relay Modules 2.5-28VDC 5 Volt Logic New Old St (Lot of 5)

  • 5V 124816 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

5V 124816 Channel: $70.19

5V 124816 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR

  • MULTILIN 1213-0001 E4 PROTECTION RELAY PC BOARD ***XLNT***

MULTILIN 1213-0001 E4: $411.35

MULTILIN 1213-0001 E4 PROTECTION RELAY PC BOARD ***XLNT***

  • Solenoid SBJ 4401 24V 5K Relay 4 Terminal

Solenoid SBJ 4401: $59.99

Solenoid SBJ 4401 24V 5K Relay 4 Terminal

  • Com-Trol  Rocketport 42AB516G01 Solid State Relay Output Board Card PCA 4K2e

Com-Trol Rocketport: $92.65

Com-Trol Rocketport 42AB516G01 Solid State Relay Output Board Card PCA 4K2e

  • Altech AD90009 1.814 Relay Module Board Base Backplane 4-Unit 5-Pin IO

Altech AD90009 1.814: $38.00

Altech AD90009 1.814 Relay Module Board Base Backplane 4-Unit 5-Pin IO

  • 22DJ4-5000 Allen Bradley OnOff Module LED Relay NIB

22DJ4-5000 Allen Bradley: $38.00

22DJ4-5000 Allen Bradley OnOff Module LED Relay NIB

  • New Horton Latching Relay Module C131-4

New Horton Latching: $40.00

New Horton Latching Relay Module C131-4

  • WIELAND   87.220.1853.0   RELAY MODULE 4 BLOCK

WIELAND : $75.00

WIELAND 87.220.1853.0 RELAY MODULE 4 BLOCK

  • Devantech ESP32LR42 WIFI 4 x 16A Relays

Devantech ESP32LR42 WIFI: $45.00

Devantech ESP32LR42 WIFI 4 x 16A Relays

  • Eurotek ET18-MR424DCNO Control Relay Module (4) SPST 24VDC Coils

Eurotek ET18-MR424DCNO Control: $81.00

Eurotek ET18-MR424DCNO Control Relay Module (4) SPST 24VDC Coils

  • 4X Te ConnectivityPotter&Brumfield 93F3108 Power RelaySpdt24vdc10aPc Board

4X Te ConnectivityPotter&Brumfield: $37.05

4X Te ConnectivityPotter&Brumfield 93F3108 Power RelaySpdt24vdc10aPc Board

  • Lot of 8 Opto 22 G4IDC5D Input Relay Modules 2.5-28VDC 5 Volt Logic - NEW

Lot of 8: $48.95

Lot of 8 Opto 22 G4IDC5D Input Relay Modules 2.5-28VDC 5 Volt Logic - NEW

  • KLEINKNECHT LE 10.078 A4 UJ 2000 RELAY MODULE **NNB**

KLEINKNECHT LE 10.078: $89.99

KLEINKNECHT LE 10.078 A4 UJ 2000 RELAY MODULE **NNB**

  • Keithley SSIO-24 Relay Board w 9x Gordos SM-ODC5 Output Modules Used #4 (C9)

Keithley SSIO-24 Relay: $39.95

Keithley SSIO-24 Relay Board w 9x Gordos SM-ODC5 Output Modules Used #4 (C9)

  • NEW CERBERUS PYROTRONICS CRM-4 CONTROLLABLE RELAY MODULE

NEW CERBERUS PYROTRONICS: $80.00

NEW CERBERUS PYROTRONICS CRM-4 CONTROLLABLE RELAY MODULE

  • Moore 4297-114S2B1 Pneumatic Relay Model 66-BA4

Moore 4297-114S2B1 Pneumatic: $50.24

Moore 4297-114S2B1 Pneumatic Relay Model 66-BA4

  • ACTION Pac INSTRUMENTS MDL-6010-147 MDL6010147 420Ma 120V Relay

ACTION Pac INSTRUMENTS: $48.99

ACTION Pac INSTRUMENTS MDL-6010-147 MDL6010147 420Ma 120V Relay

  • Arduino 1-2-4-8-16 Channel Raspberry PI  ARM AVR DSP PIC PLC Relay Module 5V 12V

Arduino 1-2-4-8-16 Channel: $66.19

Arduino 1-2-4-8-16 Channel Raspberry PI ARM AVR DSP PIC PLC Relay Module 5V 12V

  • UNKNOWN BRAND NAME RELAY CIRCUIT BOARD CARD 4-1131 41131 REV A

UNKNOWN BRAND NAME: $200.00

UNKNOWN BRAND NAME RELAY CIRCUIT BOARD CARD 4-1131 41131 REV A

  • NEW MSA 483471 RELAY PROGRAMMER MODULE 5000 D482536 REV. 4

NEW MSA 483471: $495.95

NEW MSA 483471 RELAY PROGRAMMER MODULE 5000 D482536 REV. 4

  • UNKNOWN BRAND NAME RELAY CIRCUIT BOARD CARD 4-1130 41130 REV B

UNKNOWN BRAND NAME: $70.00

UNKNOWN BRAND NAME RELAY CIRCUIT BOARD CARD 4-1130 41130 REV B

  • HURCO CONTROL RELAY 4 BOARD 415-0224

HURCO CONTROL RELAY: $397.99

HURCO CONTROL RELAY 4 BOARD 415-0224

  • Murrelektronik Art. No 61011 Relay board Assembly Germany RPK 24 63126 Trumpf

Murrelektronik Art. No: $99.99

Murrelektronik Art. No 61011 Relay board Assembly Germany RPK 24 63126 Trumpf

  • SICK UE10-4XT2D2 Intelliface Safety Relay Module 6024919 NIB NEW

SICK UE10-4XT2D2 Intelliface: $84.15

SICK UE10-4XT2D2 Intelliface Safety Relay Module 6024919 NIB NEW

  • 50pcs lot DS4E-S-DC5V Matsushita Relay 2A 5VDC DS4ESDC5V

50pcs lot DS4E-S-DC5V: $140.00

50pcs lot DS4E-S-DC5V Matsushita Relay 2A 5VDC DS4ESDC5V

  • 1 USED FACTS ENGINEERING F4-08TRS-2 OUTPUT MODULE RELAY ***Make Offer***

1 USED FACTS: $58.99

1 USED FACTS ENGINEERING F4-08TRS-2 OUTPUT MODULE RELAY ***Make Offer***

  • GE RL4RD040T CONTACT RELAY MODULE (LOT OF 2) $29

GE RL4RD040T CONTACT: $38.40

GE RL4RD040T CONTACT RELAY MODULE (LOT OF 2) $29

  • SIEMENS 3TH4040-1XB4 CONTACTOR RELAY PLC MODULE 24VDC NEW

SIEMENS 3TH4040-1XB4 CONTACTOR: $70.18

SIEMENS 3TH4040-1XB4 CONTACTOR RELAY PLC MODULE 24VDC NEW

  • 4 Channel USBWireless Relay Board(with Temperature DS18B20) - AndriodiOS

4 Channel USBWireless: $36.00

4 Channel USBWireless Relay Board(with Temperature DS18B20) - AndriodiOS

  • Pillz  PN0Z-MO4P  Controller Safety Relay Expansion Module

Pillz PN0Z-MO4P: $200.00

Pillz PN0Z-MO4P Controller Safety Relay Expansion Module

  • NEW Omron CP1E-E10DR-D CPE1 Controllers Economy 6 IN 4 Relay DC24V PLC Module

NEW Omron CP1E-E10DR-D: $93.82

NEW Omron CP1E-E10DR-D CPE1 Controllers Economy 6 IN 4 Relay DC24V PLC Module

  • OPTO 22  PB4R   4-CHANNEL SOLID STATE RELAY MODULE WRELAYS

OPTO 22 : $39.99

OPTO 22 PB4R 4-CHANNEL SOLID STATE RELAY MODULE WRELAYS

  • ACRISON 115-0732 MDII 4 PLACE MODULE RACK HARD CONTACT RELAYS M-4-1611 ***NNB***

ACRISON 115-0732 MDII: $59.99

ACRISON 115-0732 MDII 4 PLACE MODULE RACK HARD CONTACT RELAYS M-4-1611 ***NNB***

  • 3 VALMET PDU 11 POWER MODULE RELAYS DUAL OUTPUT 24VDC 25MA & 115VAC 4A 851278 M

3 VALMET PDU: $38.48

3 VALMET PDU 11 POWER MODULE RELAYS DUAL OUTPUT 24VDC 25MA & 115VAC 4A 851278 M

  • 4 Telemecanique Advantys STBDRC3210 2 Port Output Relay Modules 24V Coil Voltage

4 Telemecanique Advantys: $99.99

4 Telemecanique Advantys STBDRC3210 2 Port Output Relay Modules 24V Coil Voltage

  • EuroTek ET-MRZ0424DCSCNAR 4 Relay Socket Breakout Board 24VDC Control SPDT

EuroTek ET-MRZ0424DCSCNAR 4: $52.00

EuroTek ET-MRZ0424DCSCNAR 4 Relay Socket Breakout Board 24VDC Control SPDT

  • (L27-4) FANALARM 50-X1 ALARM RELAY MODULE

(L27-4) FANALARM 50-X1: $110.99

(L27-4) FANALARM 50-X1 ALARM RELAY MODULE

  •  Hurco Control Relay 4 Board 415-0224-905 Rev. B

Hurco Control Relay: $320.00

Hurco Control Relay 4 Board 415-0224-905 Rev. B

  • Allen-Bradley 700-SH10GZ25 SerA DC4-32V 5060Hz Solid State Relay Lot of 12

Allen-Bradley 700-SH10GZ25 SerA: $120.00

Allen-Bradley 700-SH10GZ25 SerA DC4-32V 5060Hz Solid State Relay Lot of 12

  • Makino MF4B 9DN 6N702B Relay Control Board 1ER122A001

Makino MF4B 9DN: $315.50

Makino MF4B 9DN 6N702B Relay Control Board 1ER122A001

  • Square D Class 8865 Type RMB-4 Series A Relay Module 34-15Amp 125-250VAC

Square D Class: $49.99

Square D Class 8865 Type RMB-4 Series A Relay Module 34-15Amp 125-250VAC

  • Javelin Relay Option Board -- JO308RP4 -- New

Javelin Relay Option: $100.00

Javelin Relay Option Board -- JO308RP4 -- New

  • Tong Il PC Relay Control Board # E371-09000 4 Relays Used WARRANTY

Tong Il PC: $45.00

Tong Il PC Relay Control Board # E371-09000 4 Relays Used WARRANTY

  • KMTronic RS485 8 Channel Relay Board (controller)

KMTronic RS485 8: $50.00

KMTronic RS485 8 Channel Relay Board (controller)

  • ITT MTI DZ4 E.24V Relay Unit Used With Warranty (Lot of 3)

ITT MTI DZ4: $59.99

ITT MTI DZ4 E.24V Relay Unit Used With Warranty (Lot of 3)

  • 1 NIB SIEMENS 6ES7-138-4FR00-0AA0 6ES71384FR000AA0 RELAY OUTPUT MODULE

1 NIB SIEMENS: $79.50

1 NIB SIEMENS 6ES7-138-4FR00-0AA0 6ES71384FR000AA0 RELAY OUTPUT MODULE

  • AB 700-HA35Z24-1-4 Relay 10A 3 PDT 24VDC

AB 700-HA35Z24-1-4 Relay: $59.99

AB 700-HA35Z24-1-4 Relay 10A 3 PDT 24VDC