---
product_id: 407360401
title: "Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81"
brand: "dongker"
price: "€ 43.75"
currency: EUR
in_stock: true
reviews_count: 2
url: https://www.desertcart.fi/products/407360401-optocoupler-isolation-board-signal-converter-module-voltage-level-current-voltage
store_origin: FI
region: Finland
---

# 3000V Isolation 80KHz Trigger Speed 50MA Input Current Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81

**Brand:** dongker
**Price:** € 43.75
**Availability:** ✅ In Stock

## Summary

> 🔒 Secure Your Signals with Style!

## Quick Answers

- **What is this?** Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 by dongker
- **How much does it cost?** € 43.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/407360401-optocoupler-isolation-board-signal-converter-module-voltage-level-current-voltage)

## Best For

- dongker enthusiasts

## Why This Product

- Trusted dongker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **High-Speed Operation:** Trigger signals at an impressive 80KHz for rapid response.
- • **Versatile Applications:** Perfect for inverters, motor drives, and high-voltage testing.
- • **Robust Current Handling:** Handles input currents up to 50MA, ensuring reliable performance.
- • **Customer-Centric Assurance:** Shop with confidence, backed by our dedicated after-sales support.
- • **Unmatched Voltage Isolation:** Experience over 3000V of electrical isolation for ultimate safety.

## Overview

The Optocoupler Isolation Board is a high-performance signal converter module designed for voltage level conversion and current amplification. With a staggering isolation voltage of over 3000V and a maximum input current of 50MA, this module is perfect for protecting sensitive circuits while ensuring rapid signal processing at 80KHz. Ideal for applications in inverters and motor drives, it combines safety and efficiency, making it a must-have for any professional setup.

## Description

Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81

## Features

- ❤Optocoupler Isolation Board Voltage more than 3000V . Input Current:50MA(MAX). Operating Current:more than 1MA. Output Maximum Current:50MA (when input voltage is within the range of 15－20MA)
- ❤EL817 photoelectric isolator, SCM output level can be used to isolating,anti-interference and protect SCM some circuit when driving motor
- ❤Isolator High-Level Trigger 80KHz, SCM outpput level is low,and driven module voltage is high
- ❤Can be applied to inverter,which can invert output the input signal, High Voltage Testing, Current Amplification
- ❤SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Country of Origin | USA |
| Item model number | AAQ-WYY-9192 |
| ASIN | B07YJL3MQQ |

## Product Details

- **Brand:** DONGKER
- **Color:** Green
- **Item Weight:** 0.01 Kilograms
- **Output Voltage:** 12 Volts
- **Plug Format:** Type C or E/F

## Images

![Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 - Image 1](https://m.media-amazon.com/images/I/61Nxq7NjHKL.jpg)
![Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 - Image 2](https://m.media-amazon.com/images/I/71bJD7UfjsL.jpg)
![Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 - Image 3](https://m.media-amazon.com/images/I/71GdGDKfeyL.jpg)
![Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 - Image 4](https://m.media-amazon.com/images/I/71QZ97+kaBL.jpg)
![Optocoupler Isolation Board, Signal Converter Module Voltage Level Current Voltage Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optical Isolator Module Input Optoisolator 12V PC817 EL81 - Image 5](https://m.media-amazon.com/images/I/71K7oSUVT3L.jpg)

## Questions & Answers

**Q: The description says "24v voltage level converter" then later "12v".  can i use 24v at the "+ input" terminal?**
A: Yes , I am using this on a 3D printer at 24V.

**Q: What can i do with this?**
A: This allows small, low current signals to switch larger voltages/currents like a switch, but in an isolated manner. It can also work in the opposite manner, high to low. The source circuit is completely isolated from the target circuit. I used this  on my 3D printer to take a 24V digital signal and convert it to a 3.3 V signal connected a microcontroller pin on the board.

**Q: I need an optocoupler that receive 16vac from doorbell system and that produce 3.3v to connect to gpio pin from esp-01s. can i use this optocoupler?**
A: It would convert then AC signal to a square wave signal.

**Q: Hi, Does it work with audio signals or audio amplifiers? or its just designed for digital signals?**
A: In theory it can handle a signal frequency up 80KHz which is within the range of an audio signal. There are are two resistors on the board, one on the input and one on the output that can cut your signal. You may need to change these out depending on the level of your audio signal. I have seen the underlying chip, PC817, used in audio circuits (can't provide the link here but search on PC817). It conducts current in one direction so the audio would be distorted at best.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works for 3D printing!
  

*by J***K on Reviewed in the United States on 18 August 2020*

I used this to hook up a conductive probe to my Ender 3's 24v power supply. I had to swap the resistor for a higher rated one to do this as this optocoupler is rated for 12v but it worked wonderfully!

### ⭐⭐⭐⭐⭐ 







  
  
    Works as advertized
  

*by M***M on Reviewed in the United States on 13 July 2020*

Item works well.  I use them on cars to take 12 volt inputs and activate low level 3.3 or 5 volt logic circuits on Raspberry Pis or Ardunios.

## Frequently Bought Together

- DONGKER Optical Isolator Module,12V Photoelectric Optoisolator PNP NPN Signal Converter PC817 Optocoupler Optoisolator
- eBoot 6 Pack Mini MP1584EN DC-DC Buck Converter Adjustable Power Supply Module 24V to 12V 9V 5V 3V

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-01-27*