PC817 Optocoupler Isolation Module – 1Ch PLC MCU Driver Board
PC817 Optocoupler Isolation Module – 1Ch PLC MCU Driver Board
1-Channel PC817 Optocoupler Isolation Module for PLC, MCU & DIY Electronics
This compact 1-Channel PC817 / EL817 Optocoupler Isolation Module is designed for makers, engineers, and electronics enthusiasts who need reliable electrical isolation between control circuits and load circuits. Whether you're interfacing a microcontroller with high-voltage systems or protecting sensitive PLC inputs, this opto-isolator board delivers clean signal separation in a small, easy-to-use package.
Key Features
- Dual Input Voltage Options: Accepts 3.2V–5V (logic-level) or 12V–24V input — compatible with a wide range of microcontrollers and PLCs
- Wide Output Range: DC 1.8V–24V output supports diverse downstream loads
- PC817 / EL817 Optocoupler: Industry-standard component for proven, stable isolation performance
- Single-Channel Design: Clean, focused layout ideal for discrete signal control tasks
- Compact Board: Easy to integrate into enclosures, breadboards, or custom PCB assemblies
- Screw Terminal Connections: Tool-friendly wiring for both input and output sides
- Broad Compatibility: Works with Arduino, Raspberry Pi, ESP32/ESP8266, STM32, PLCs, and other MCU platforms
Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Input Voltage | 3.2V–5V or 12V–24V |
| Output Voltage | DC 1.8V–24V |
| Optocoupler Component | PC817 or equivalent (EL817) |
| Application | PLC, MCU, Arduino, Raspberry Pi, DIY circuits |
What's in the Box
- 1× Optocoupler Isolation Module (PC817/EL817)
- Some variants include 1× connecting cable (see listing variant)
Important Notes
- Due to lighting and screen differences, the item's color may appear slightly different from product images.
- Please allow ±1mm–1cm differences due to manual measurement.
- Made in Mainland China.
For general electrical safety guidance when working with DIY electronics and wiring, refer to the OSHA Electrical Safety Resource.
Frequently Asked Questions
Q: What is a PC817 optocoupler isolation module used for?
A: A PC817 optocoupler isolation module is used to electrically isolate two separate circuit sections — for example, a low-voltage microcontroller (Arduino, ESP32, PLC) from a higher-voltage load circuit. This prevents voltage spikes or noise on the load side from damaging the sensitive control electronics.
Q: Is this module compatible with Arduino and Raspberry Pi?
A: Yes. The 3.2V–5V input range is directly compatible with standard 3.3V and 5V logic levels used by Arduino, Raspberry Pi, ESP8266, ESP32, STM32, and most common MCU development boards. No additional components are required for basic signal isolation.
Q: Can this module handle 12V or 24V input signals from a PLC?
A: Absolutely. This module supports both 3.2V–5V and 12V–24V input ranges, making it well-suited for industrial PLC applications that operate at higher logic voltages.
Q: Does the package always include a cable?
A: The module is available in two variants — the module only, or the module bundled with a connecting cable. Please check the variant selected at checkout to confirm what is included in your specific order.