Best optocouplers Deals Online in the US
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BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)BOJACK 
AOICRIE 4pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation ModuleAOICRIE- Best Value
10 pcs Lite-On 4N35 Optocouplers Phototransistor 30V ICFree Shipping 
GuuYebe 50 Pcs PC817 Optocoupler PC817C Optocouplers of Optoelectronic ProductsGuuYebe
100 TT Electronics OPI11065 Optoelectronic Transistor Output Optocouplers NEW
NOYITO 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (3-5V)NOYITO
Chanzon 50pcs PC817 Optocoupler PC817C DIP Installation DIP-4 50%-600% Transfer Ratio 4pin Optocouple Compatible with EL817C/LTV817C/FL817C/el817 Optical IsolatorCHANZON-
(Lot of 92) - HCNR201-550E High Linearity Optocouplers 1 Ch 60mW 25mA - BULKFree Shipping
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VIBICCK 60pcs optocouplers PC817C Installed with DIP-4 50% -600% Transmission Ratio 4-pin optocoupler Compatible Optical Isolator (Pack of 60 pcs)VIBICCK
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50pcs PC817 EL817C LTV817 PC817-1 DIP-4 OPTOCOUPLER
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TAODAN 50pcs PC817 Optocoupler DIP 2.54 mm Pitch 4-pin DIP-4 IC ChipsetTAODAN
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5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHzIS
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PC817 2-Channel 3.6V-30V Optocoupler Isolation Board Voltage Converter Module
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AOICRIE 6pcs PC817 1 Channel Optocoupler Isolation Module 1CH Optocoupler PC817 3-5V 12V 24V Photoelectric Isolator PNP NPN Signal Converter Rail Holder PLC Drive Motor BoardAOICRIE
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PC817 8-Channel 3.6V-30V Optocoupler Isolation Board Voltage Converter Module
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Bridgold 50pcs PC817c PC817 for Arduino DIY Through Hole transistor output optocoupler,4-PinBridgold
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5PCS Lite-On 4N35 Optocouplers Phototransistor 30V IC New IC
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Bridgold 50pcs PC817c PC817 for Arduino DIY Through Hole transistor output optocoupler,4-PinBridgold
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12V 1 Channel Module with Optocoupler Isolation High & Low Level Trigger Relay
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AOICRIE 2pcs PC817 8 Channel Optocoupler Isolation Board Voltage Converter Module 3.6-30V Photoelectric Isolated Module 817 Voltage Isolation ModuleAOICRIE
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6 Silonex NSL-26 Hermetic Photocell Optocouplers
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DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation ModuleDONGKER
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2PCS PC817 8 Channel Optocoupler Isolation Board, Voltage Converter, 3.6-30V
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JESSINIE 3Pcs 1Channel AC Optocoupler Module 220V Voltage Detect Optocoupler Isolation Microcontroller TTL Level 3V-5VJESSINIE
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3Pcs 1Channel AC Optocoupler Module 220V Voltage Detect Optocoupler Isolation Mi
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EC Buying 5Pcs 24V Optocoupler Isolation Board Optoelectronic Isolator EL817 PC817 Card Rail Bracket Input 3-5 V Optocoupler Isolation Module 1 Channel Opto PNP NPN Signal ConverterEC Buying
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21 Piece Radio Shack Archer NOS DIP IC Transistor Op Amp Timer Optocoupler
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NOYITO 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (24V)NOYITO
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AC 220V Optocoupler Module AC Optocoupler Alternating Current Detect 1CH
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NOYITO 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V (Pack of 2) (12V)NOYITO
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42 pcs. FAIRCHILD TIL113 TRANSISTOR OUTPUT OPTOCOUPLERS DARLINGTON OUTPUT
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Bridgold 10pcs 6N138 138 6N High Speed Optocoupler, 100 kBd, Low Input Current, Photodiode Darlington Output，8-Pin.Bridgold
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99 TT Electronics OPI11065 Optoelectronic Transistor Output Optocouplers NEW
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1Pc Green 1-Channel PC817 Optocoupler Isolation Module Optoelectronic Isolator Signal Isolation and Anti-Interference 3-5V 12V 24V Optocouplers Optoelectronic Products(3-5V)BWESOO
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HiLetgo 2pcs ADUM1201 Dual Channel Digital Magnetic Isolator Replace OptocouplersHiLetgo
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Major Brands MOC3021 Optocoupler Triac AC Output 1 Channel 400VDRM (Pack of 10)Major Brands
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EC Buying 5Pcs 3-5V Optocoupler Isolation Board Optoelectronic Isolator EL817 PC817 Card Rail Bracket Input 3-5 V Optocoupler Isolation Module 1 Channel Opto PNP NPN Signal ConverterEC Buying
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AOICRIE 8pcs PC817 2 Channel Optocoupler Isolation Board Voltage Converter 3.6-30V Driver Photoelectric Isolated Module 817 Voltage Isolation ModuleAOICRIE
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Teyleten Robot DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module for Arduino (Pack of 5)Teyleten Robot
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DONGKER Optocoupler Isolation Board, 24V to 3.3V 8-Channel Photoelectric Isolation Module Level Voltage Converter PNP Output PLC SignalDONGKER
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MEETOOT 10pcs Transistor Output Optocoupler DIP-4 PC817C PC817 High Density Mounting Type Photoelectric CouplerMEETOOT
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BOJACK 12 Values 120 Pcs Opamp Timer Darlington Phototcoupler LM324 LM339 ULN2003AN ULN2803APG LM358P LM386 LM393 NE5532P NE555P UA741CN JRC4558D PC817 IC Assortment KitBOJACK
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Major Brands 4N35 Optocoupler, DC Input 1 Channel Trans with Base DC Output, 100% Transfer Ratio, 6-Pin, PDIP, 1.2V, 4 mm H x 7 mm W x 7.62 mm L (Pack of 20)Major Brands
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ACEIRMC 4pcs 8CH Optocoupler PC817 8 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module (8CH Optocoupler)ACEIRMC
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10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor BoardShutao
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HiLetgo 3pcs TLP281 Optocoupler Isolation Board Optical Coupler Isolation Module 4 Channel Optical Coupler Isolation Module High/Low Level Expansion BoardHiLetgo
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Alinan 4pcs 4CH Optocoupler PC817 4 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated ModuleAlinan
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Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino DIY (Pack of 20pcs) AE1143Gikfun
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8 Channel Optical Isolation Module 24V to 5V Optocoupler PLC Signal Converter Board for Signal Isolation Optical Module Optical Module Board RailsMarhynchus
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VIBICCK 12Value 130pcs Darlington Optocoupler Timer Operational Amplifier Assortment Kit LM324 LM339 ULN2003AN ULN2803APG LM358P LM386 LM393 NE5532P NE555P UA741CN JRC4558D PC817 IC Assortment KitVIBICCK
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DAOKAI 5PCS IR Infrared Slotted Optical Optocoupler Speed Measuring Sensor Module 3.3-5V for Arduino Also for Smart Robot Car Speed Measurement with Dupont WireDAOKAI
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Teyleten Robot IR Infrared Slotted Optical Optocoupler Module Speed Measuring Sensor 3.3V to 5V Photo Interrupter Sensor for Arduino 10pcsTeyleten Robot
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HiLetgo 2pcs PC817 2 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)HiLetgo
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AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development BoardAITRIP
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Major Brands H11AA1 Optocoupler AC Input 1 Channel Transistor with Base DC Output, 6-Pin, 6.86 mm W x 5.08 mm H x 8.89 mm L, Black (Pack of 10)Major Brands
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3.3V/5V to 3.6V/24V 4 Channel Voltage Converter Optocoupler Isolated Board Adapter Module Strong Anti-Interference for Isolation Control and Voltage ConversionZopsc
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HUAREW 1-Channel 12V Relay Module with optocoupler Isolation Supports high and Low Level triggering (Pack of 10)HUAREW
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Bridgold 10pcs 4N35 35 Optocoupler DC Input 1 Channel Trans with Base DC Output, 100% Transfer Ratio，6Pins.Bridgold
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AEDIKO 4pcs DC 5V Relay Module - 1 Channel Relay Switch Board with Optocoupler Isolation, High or Low Level TriggerAEDIKO
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2Pcs Magnetic Isolator Board Module Replace Optocouplers ADUM1201 Isolator ADUM1201ARZ SOIC 8 Isolator SPI InterfaceGODIYMODULES
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Hosyond 4Pack 4 Channel DC 5V Relay Module with Optocoupler Relay Board for Arduino Raspberry Pi MEGA2560Hosyond
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DAOKAI 5 Pcs 4 Channel Optical Coupler Isolation Module TLP281 Chip IC Module Board Optocoupler Isolation High/Low Level Expansion Board, for ArduinoDAOKAI
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HiLetgo 2pcs PC817 4 Channel Optocoupler Isolation Board 817 Voltage Isolation Module Voltage Converter Module 3.6-30V Photoelectric Isolated Module(2/4/8 Channel Optional)HiLetgo
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Bestol 100pcs EL817S PC817 PC 817 EL817C SOP-4 SMD Optocoupler EL817B PC817 EL817 DIP4 (PC817 SOP4)Bestol
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Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Opto Voltage Isolation Module Driver Photoelectric Isolated ModuleDONGKER
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Optocoupler Isolation Module,DC 12V 24V 8-Channe Optocoupler Isolation Board PNP NPN Low High Level Output Signal ConverterDONGKER
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6PCS PC817 2 Channel 4-Channel Voltage Converter Module Optocoupler Isolation Board Optocoupler Photoelectric Isolated Driving Module 3.6-30V (4 Channel+2 Channel)Diitao
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ACEIRMC 5V 16-Channel Relay Interface Board Module Optocoupler LED LM2576 Power for Arduino DIY Kit PiC ARM AVR (2pcs)ACEIRMC
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EC Buying 10PCS IR Infrared Sensor Module Slotted Optical Optocoupler Speed Measuring Sensor Module Photo Interrupter Sensor Motor Speed Detection Robot for ArduinoEC Buying
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ANMBEST 2PCS 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi ArduinoANMBEST
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Valefod DC 5V Relay Module 1-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger, Pack of 10Valefod
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HiLetgo AC 220V Optocoupler Module AC Optocoupler Alternating Current Detect Module 3-5V or PLC 24V Level Power for PLC MCU(3 Channel)HiLetgo
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Optocoupler Isolation Module,AC 110V 220V 8-Channel PNP Power Monitor Voltage Level Converter ModuleDONGKER
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KIMISS Optocoupler Isolation Board 24V to 5V PLC Level Voltage Converter Module 4 Channel Professional Accessories, KIMISS7gxbhnk1cdKIMISS
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20% Off3 Pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817GODIYMODULES
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HiLetgo AC 220V Optocoupler Module AC Optocoupler Alternating Current Detect Module 3-5V or PLC 24V Level Power for PLC MCU(1 Channel)HiLetgo
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SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry PiSunFounder
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HiLetgo 2pcs 5V 30A One Channel Relay Module Optocoupler Isolation High and Low Trigger 5VHiLetgo
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ELEGOO 8 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 1280 DSP ARM PIC AVR STM32ELEGOO
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ELEGOO 8 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 1280 DSP ARM PIC AVR STM32ELEGOO
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Alinan 8pcs 2CH Optocoupler PC817 2 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated ModuleAlinan
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EC Buying 5Pcs 12V Optocoupler Isolation Board Optoelectronic Isolator EL817 PC817 Card Rail Bracket Input 3-5 V Optocoupler Isolation Module 1 Channel Opto PNP NPN Signal ConverterEC Buying
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WAGO 859-730 DIN Rail Mount Terminal Block, Optocoupler, 5 Positions, 28 AWG, 14 AWG, 2.5 mm?, Clamp, 3 AWAGO
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NOYITO PC817 8-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated ModuleNOYITO
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Awgem Optocoupler Tester, Multi-Function Transistor Tester with LED Display, Automatic Transistor/optocoupler Tester, Portable Optocoupler Test Tool for Electronics Repair.Awgem
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V BESTLIFE PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817V BESTLIFE
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HiLetgo 12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level TriggerHiLetgo
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NOYITO 4-Channel Optocoupler Photoelectric Isolator Module Level Voltage Converter Module PLC Signal Converter Module PNP NPN to NPN (3.3V to 24V)NOYITO
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2Pcs 1-Bit AC Optocoupler Isolation Module 220V Voltage Detect Board Adaptive 3-5V for PLC ModuleGODIYMODULES
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NOYITO 4-Channel Optocoupler Photoelectric Isolator Module Level Voltage Converter Module PLC Signal Converter Module PNP NPN to PNP (12V to 3.3V)NOYITO
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ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32ELEGOO
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ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32ELEGOO
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SENRISE 8PCS PC817 Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module Easy to Use(2 Channel)SENRISE
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MTDELE 6Pcs DC 3.3V Relay Module 1 Channel Optocoupler Module 3V/3.3V Relay Isolated Drive Control Board Compatible with for ArduinoMTDELE
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Yetaida 2 Channel DC 5V Relay Module with Optocoupler Control Board and Indicator Light, Development Board Accessories Relays, Suport High Low Level TriggerYetaida
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10 Pcs Motor Speed Sensor with L393 Chip, IR Infrared Optocoupler Module by 5mm Slotted Interrupter Sensor for Motor Speed and for Arduino EncodersAcogedor
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8 Channel 5V Relay Module with Optocoupler Isolation Support High and Low Level Red BoardVOGURTIME
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NOYITO Optocoupler isolation MOS FET 10A DC 2.7-27V High-Power Field Effect Tube Driver Module 0-20Khz PWM Switch Control Board Development Board ModuleNOYITO
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12% OffJESSINIE 12V Relay Module with Optocoupler Isolation, 8 Channel High/Low Level Trigger, Compatible with Arduino Raspberry Pi for DIY ProjectsJESSINIE
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AEDIKO 4pcs DC 5V Relay Module 2 Channel Relay Board with Optocoupler Support High or Low Level TriggerAEDIKO
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MUNEFE Optocoupler Isolation Board, 24V to 5V PLC Level Voltage Converter Module, 4 ChannelMUNEFE
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NOYITO 30A 4 Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 30A for PLC Automation Equipment Control, Industrial Control (4-Channel 5V)NOYITO
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AEDIKO 2pcs DC 12V Relay Module 4 Channel Relay Board Shield with Optocoupler Isolation Suport High/Low Level TriggerAEDIKO
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WWZMDiB Relay Module High and Low Level Trigger Optocoupler Isolation Compatible with for Arduino Raspberry Pi ESP32 STM (1, 2 Channel, 24 V)WWZMDiB
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EC Buying 5Pcs 1 Channel 5V Relay Module with Optocoupler Isolation Supports High or Low Level Trigger 1-Way 5V Red Board Expansion BoardEC Buying
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HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12VHiLetgo
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12Pcs 1 Channel Optocoupler Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board 3V/3.3V Relay Power Switch Board for ESP8266 Microcontrollers Development BoardDORHEA
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DaFuRui 5v Relay Module，8Pack 1 Channel Relay Module 5v Relays Board with Optocoupler Support High/Low Level Trigger for Arduino RelaysDaFuRui
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DaFuRui 5v Relay Module，8Pack 1 Channel Relay Module 5v Relays Board with Optocoupler Support High/Low Level Trigger for Arduino RelaysUsedDaFuRui
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Aoicrie 5Pcs DC 5V 1 Channel Relay Module Board Shield with Optocoupler Isolation Support High or Low Level Compatible Development Board TriggerAOICRIE
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2pcs 4 Channel 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino (4 Channel 5V)ACEIRMC
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4-Channel 24V Relay Module Board with Optocoupler Isolation, Supports High/Low Level Triggers for Arduino Projects - Reliable Expansion ShieldMusRock
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DIANN 12pcs DC 12V Relay Module 1 Channel Relay Board with Optocoupler Support High/Low Level TriggerDIANN
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DIANN 30A 4 Channel Relay Module 5V Relay Module Expansion Board High Low Level Trigger with with Optocoupler Isolation for PLC Automation Equipment Control Industrial ControlDIANN
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Industrial with Opto-Coupler Isolation GPIO Relay 3-24V Level Control 5-32V Power Supply with ABS DIN Rail Housing High and Low Level Dual Mode (8-Channel Relay)diustou
115 Optocouplers deals are available from:
Amazon, eBay stores, starting from $4.81.
The biggest discount we found is 20% on 3 Pcs PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817 at Amazon.
The lowest price we found is $4.81 while the highest is $160.54.
Prices for the best Optocouplers deals average at $16.14.
Last updated on April 4, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Optocouplers.