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The Best Optocoupler Board of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best Optocoupler Board of 2023. Check our ranking below.

2,807 Reviews Scanned

Rank No. #1

DONGKER Optocoupler Isolation Board,DC 3.3V 5V PNP NPN 8-Channel Signal Converter Voltage Converter Adapter Module

Optocoupler isolation control.
8-Channel input and output.
NPN / PNP (Low/High level) signal output.
Support DC 3.3V~5V Input.
DC 1.8V-24V load voltage.

Rank No. #2

NOYITO PC817 4-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

This module is used when it comes to the need for isolation control and voltage conversion.
Drive terminal signal voltage: 3.6-24V. Output terminal voltage range: 3.6-30V (output current depends on the specific situation but the maximum does not exceed 10MA, the total power is constant, the voltage and current are inversely proportional)
It can realize 3.3V or 5V to control the interface of 3.6-30V voltage . After the control terminal is turned on, the controlled terminal will also be turned on.
Photoelectric isolation has strong anti-interference ability. It can drive high-power triodes, MOS tubes and other applications that require high-voltage driving, and can also directly drive low-power 24V relays.If it is a pulse signal, please note that the limit of 817 is 4KHZ or less. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.
【8-Channel Optocoupler Isolation Board ASIN ： B09RGTBDKJ 】 NOYITO PC817 4-Channel Optocoupler Isolation Board User Manual https://1drv.ms/u/s!AlzQUCOyZQhKgT98ibtG22R8W5eQ?e=VfKbrK

Rank No. #3

5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz

【Relay Switch Module】5pcs 1-channel photocoupler isolator with stable performance, triggered by DC 12V and 1mA current.
【Signal Voltage】Positive phase amplification with high-level trigger. Output equals input.
【Level Converter】Opto-isolators can be used as level converters (NPN-PNP, PNP-NPN), signal input to MCU in isolation, or MCU-controlled device output in isolation.
【Control Transformer】Optocoupler isolation board provide isolation between low and high-voltage circuits when used with other electronic devices.
【Functional Application】Devices for microprocessor Input/Output switching, DC/AC power control, communications equipment protection, and power supply regulation.

Rank No. #4

NOYITO PC817 8-Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

This module is used when it comes to the need for isolation control and voltage conversion.
Drive terminal signal voltage: 3.6-24V. Output terminal voltage range: 3.6-30V (output current depends on the specific situation but the maximum does not exceed 10MA, the total power is constant, the voltage and current are inversely proportional)
It can realize 3.3V or 5V to control the interface of 3.6-30V voltage . After the control terminal is turned on, the controlled terminal will also be turned on.
Photoelectric isolation has strong anti-interference ability. It can drive high-power triodes, MOS tubes and other applications that require high-voltage driving, and can also directly drive low-power 24V relays.
If it is a pulse signal, please note that the limit of 817 is 4KHZ or less. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.

Rank No. #5

2Pcs PC817 8 Channel Optocoupler Isolation Board 3.6-30V Driver Photoelectric Isolated Module Voltage Converter Adapter Module

8 channel optocoupler isolation board is used when it comes to the need for isolation control and voltage conversion.
8-way 817 optocoupler drive terminal signal voltage: 3.6-24V. Output terminal voltage range: 3.6-30V (output current depends on the specific situation but the maximum does not exceed 10MA, the total power is constant, the voltage and current are inversely proportional)
It can realize 3.3V or 5V to control the interface of 3.6-30V voltage . After the control terminal is turned on, the controlled terminal will also be turned on.
Photoelectric isolation has strong anti-interference ability. It can drive high-power triodes, MOS tubes and other applications that require high-voltage driving, and can also directly drive low-power 24V relays.
If it is a pulse signal, please note that the limit of 817 is 4KHZ or less. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.

Rank No. #6

Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi

DC 5V 8-Channel Relay interface board, each one needs 15-20mA Driver Current.
Equiped with high-current relay, AC250V 10A ; DC30V 10A.
Standard interface that can be controlled directly by microcontroller (8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
With power indicator,8-way road has a status indicator. With a relay coil to absorb the diode protection.
Indication LED's for Relay output status. Widely used for all MCU control, industrial sector, PLC control, smart home control.

Rank No. #7

Alinan 4pcs 4CH Optocoupler PC817 4 Channel Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module

★Driving Port Signal Voltage: 3.6-24V; Output Port Voltage Port: 3.6-30V
★Can realize 3.3V or 5V to control the interface of 3.6-30V voltage . After the control terminal is turned on, the controlled terminal will also be turned on.
★Photoelectric isolation has strong anti-interference ability. Can drive big behindPower triodes, MOS tubes, etc., where high voltage driving is required, can also directly drive low power 24V relays.
★If it is a pulse signal, please note that the limit of 817 is below 4KHZ. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.
★Through the jumper cap can achieve whether the output is high potential output or low output.The 4th and 817 on the board are independent, which can realize simultaneous control of different voltages, etc.

Rank No. #8

NOYITO TLP281 4-Channel Optocoupler Isolation Board for High and Low Level Optocoupler Isolation Expansion Board (Pack of 5)

NOYITO TLP281 4-Channel Optocoupler Isolation Board is helpful for connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system.
This board electrically isolates a controller from the high-power system by use of an opto-isolator IC. This IC has four LEDs and four photodiodes built-in. This allows the low-voltage side to control a high voltage side.
This board uses the TLP281 optoisolator and discrete transistors to correct the logic. Comes with four channels. Great for use in noisy circuits where signal lines require electrical isolation.
A normal LED opto-isolator will invert the logic of a signal. We putsome transistors on this compact board to correct the inversion. What you put into the IN pins, will be replicated on the the OUT pins, but at the higher voltage (HV).
【Manufacturer's One-year Warranty】

Rank No. #9

HiLetgo 2pcs ADUM1201 Dual Channel Digital Magnetic Isolator Replace Optocouplers

Higher speed can reach 125Mbps.
Lower power consumption than the same data transfer rate when the traditional optical isolator 1/10, the minimum operating current 0.8mA.
Performance higher timing accuracy, transient common mode rejection, the degree of matching between channels are better than the traditional optical isolator.
The smaller the integration, the printed circuit board (PCB) area of 40% of the traditional photoelectric isolator.
Application: RS-232/RS-422/RS-485 transceiver isolation

Rank No. #10

Treedix Opto-Isolator Breakout Board with Two Photodiodes Built-in Comes with 2 Channel Coupler for Blocking Circuit

The board electrically isolates the controller from the high-power system by using an opto-isolator IC. The opto-isolator breakout IC has built-in two LEDs and two photodiodes, allowing the low-voltage side to control the high-voltage side.
This is specially designed for optical isolation, which helps to connect digital systems to high-voltage or noisy systems.Good isolation performance, complete electrical isolation between input and output.
The breakout board uses ILD213T opto-isolator and discrete transistors to calibrate the logic, with two channels. It is very suitable for use in noisy circuits where signal lines need electrical isolation.
Using this board can allow the microcontroller to control the servo system or other motors. These motors use a higher voltage than the TTL logic on the micro (3.3V or 5V), and may affect our system when the motor is turned on and off. Cause electromagnetic interference.
Easy to connect logic circuits, fast response speed, high transmission efficiency： this optoisolator is configured for data rates up to 9600bps. Compatible with dual wave, vapor phase and IR reflow soldering

Rank No. #11

HiLetgo 3pcs TLP281 Optocoupler Isolation Board Optical Coupler Isolation Module 4 Channel Optical Coupler Isolation Module High/Low Level Expansion Board

TLP281 4 Channel Optical Coupler Isolation Module
PCB Size: 25mm x 26mm
Connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system
A higher voltage than the TTL logic on the (3.3V or 5V) micro
A normal LED opto-isolator will invert the logic of a signal

Rank No. #12

ALAMSCN 16 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board for Smart Control Switch

This relay module is 5V active low. Relay output maximum contact is AC250V 10A and DC30V 10A.
Each relay has normally open and normally closed contact. Can be selected by jumper relay and TTL or ground.
With power indicator and working status indicator lights which are conducive to the safe use.
Standard interface that can be controlled directly by microcontroller.
Widely used for all MCU control, industrial sector, PLC control, smart home control.

Rank No. #13

V BESTLIFE PC817 4 Channel Optocoupler Isolation Board Voltage Converter Adapter Module 3.6-30V Driver Photoelectric Isolated Module PC 817

This module is used when the actual operation requires isolation control and voltage conversion.
It can realize 3.3V or 5V to control the interface of 3.6--24V voltage level. After the control terminal is turned on, the controlled terminal will also be turned on.
Photoelectric isolation has strong anti-interference ability. Can drive big behindPower triodes, MOS tubes, etc., where high voltage driving is required, can also directly drive low power 24V relays.
If it is a pulse signal, please note that the limit of 817 is below 4KHZ. If the control signal is greater than 4KHZ, please do not use this module, it will not work properly.
Through the jumper cap can achieve whether the output is high potential output or low output.The 4th and 817 on the board are independent, which can realize simultaneous control of different voltages, etc.

Rank No. #14

NOYITO Isolated MOS FET Field Effect Transistor Module Optocoupler Isolation Alternative Relay - FR120N 100V 9.4A, LR7843 30V 161A, AOD4184 40V 50A (Pack of 2) (100V 9.4A FR120N)

With optocoupler isolation, the control signal and the power of the controlled device are isolated, and greatly improve the anti-jamming.
Compatible with MCU light control board, 3V or 5V signal.
High-level start, low-level stop, PWM speed control. Widely used to control the motor start and stop, solenoid valves and other tributary devices.
The signal input side can be soldered to the terminal or pin itself, compatible with the breadboard.
NOYITO Isolated MOS FET Field Effect Transistor Module Wiring diagram and Use Note Datasheet (PDF) https://1drv.ms/u/s!AlzQUCOyZQhKgh2BlYdVruZjGE_v?e=3Zpzsf

Rank No. #15

DZS Elec 5V 4 Channel Relay Optocoupler Isolation Module Red Board 3-5V High and 0-1.5V Low Level Triggered Load AC 0-250V / DC 0-30V 10A SCM IO Control

Work Voltage: DC 5V, Max Load for Output: AC 250V/10A, DC 30V /10A.
Trigger Current 5A, can be used to all kinds of Single Chip Microcomputer IO control triggering, normally open and normally close two work mode.
By switching the trigger level selection terminal to set 3-5V high level or 0-1.5V low level trigger controlled.
Adopting patch piece opto-isolator, green power light, red relay status light, strong drive capability, stable performance, clear work condition.
Fault tolerant designed, humanized lead wire terminals, even the control line break off, the relay still keep working.

Rank No. #16

Onyehn 2pcs 8 Channel DC 5V Relay Module with Optocoupler for arduino UNO R3 MEGA 2560 1280 PIC AVR DSP ARM STM32 Raspberry Pi

8 Channel DC 5V Relay Module with Optocoupler
Using high-current relay, AC250V 10A DC30V 10A
Contact some independent wiring, safe and reliable
Standard interface, can be extended in a variety of development board With fixed screw holes for easy installation
Suitable for a variety of platforms such as 51/AVR/AVR/ARM

Rank No. #17

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 Pi

5V 2-Channel Relay interface board, and each one needs 15-20mA Driver Current
Equiped with high-current relay, AC250V 10A ; DC30V 10A
Standard interface that can be controlled directly by microcontroller (compatible with Arduino ,Raspberry Pi, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
Indication LED's for Relay output status
Size: 50.5mm(L) x 38.5mm(W) x 18.5mm(H)(1.99inch x 1.54inch x 0.73inch)

Rank No. #18

NOYITO 4-Channel Optocoupler Photoelectric Isolator Module Level Voltage Converter Module PLC Signal Converter Module PNP NPN to NPN (12V to 5V)

NOYITO 4-Channel Optocoupler Photoelectric Isolator Module Level Voltage Converter Module with high quality optocoupler and LED patch indicator.
The power supply has anti-connection protection. The limit conversion frequency is 20Khz.
PCB size: 45x72mm. Module size: 48x86x40mm (LxWxH).
Widely used, it can be used for signal isolation, level conversion between signals such as single chip microcomputer and PLC. PNP,NPN signal to NPN signal, signal level conversion and other uses.
NOYITO 4-Channel Optocoupler Photoelectric Isolator Module User Manual https://1drv.ms/u/s!AlzQUCOyZQhKgQ3dvpz6np9ZL2Rw?e=oESws9

Rank No. #19

Songhe 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)

Original Songle Relay
30VDC 250VAC Load：The power switch is compatible with 10A 250VAC and 10A 30VDC load.
Optocoupler Isolator:3V/3.3V power relay module supports photocoupler isolation control.

Rank No. #20

Gump's grocery 1-Bit AC 220V Optocoupler Isolation Module Voltage Detect Board Adaptive for PLC

1.Board Size:73*15mm
2.Functuon:Testing whether AC 220V is existed
3.Ouput TTL Level:can use SCM to test,voltage is 3-5V
4.Adaptive to PLC 24V level

Last update on 2023-08-04 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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FAQ:

Q: What can an optocoupler isolation board be used for?

A: AL-ZARD’s DST-1R4P-N is an optocoupler isolation board that comes in handy if you need to convert an electrical digital signal from one voltage level into another voltage level. A typical example is a digital 24V signal of an industrial sensor that has to be read by an ESP32 microcontroller.

Q: How is the optocoupler board used in Arduino?

A: The usage of the optocoupler board is basically similar to reading the state of the button. First, set the pin mode to INPUT_PULLUP in the setup function. In the loop function, simply read the value of the pin. As mentioned before, if the value is ‘low’ the actual digital signal on the corresponding input channel is ‘high’.

Q: What kind of circuit is an optocoupler used for?

A: Optocoupler also called Opto-isolator, photo coupler or optical isolator. Often in circuits, especially low voltage or highly noise sensitive circuits, Optocoupler is used to isolate circuitry to prevent electrical collision chances or to exclude unwanted noises.

Q: How is an opto coupler used in a microcontroller?

A: The photo transistor makes a response and converts the VOUT from 5V to 0V. In this configuration the opto-coupler can be connected across low voltage circuit such as microcontroller unit where the AC voltage detection is required. The output will produce square High to Low pulse.