DIYables DIYables EL817 PC817 1 Channel Optocoupler Isolation Module 3000V Signal Isolator 5KHz 3-5V Input for Arduino ESP32 Raspberry Pi Microcontroller, 5 Pack
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Quick Overview
This DIYables EL817/PC817 optocoupler isolation module provides over 3000V of electrical isolation between input and output circuits, effectively protecting microcontrollers from inductive load interference and voltage spikes. Built around the EL817/PC817 optocoupler chip, it supports up to 50mA input and 50mA output current with a maximum 5KHz signal frequency for reliable switching.
The module supports 3V to 5V input, making it compatible with Arduino Uno, ESP32, ESP8266, Raspberry Pi, and most common microcontroller development boards. It's rated for -55°C to 110°C operation, ensuring stable isolation performance across industrial and hobbyist environments, and includes an onboard LED to indicate when the input signal is active. Screw terminals on both the input and output sides make wiring quick and solder-free.
This listing includes 5 EL817/PC817 optocoupler isolation modules, each measuring 40.3 x 14.9mm and weighing 8g, ideal for multiple projects or spare replacements.
Key Features
- EL817/PC817 Optocoupler Chip — Supports up to 50mA input and 50mA output current with maximum 5KHz signal frequency for reliable switching
- High Voltage Isolation — Provides over 3000V electrical isolation between input and output circuits
- Protects Against Interference — Shields microcontrollers from inductive load interference and voltage spikes
- 3V to 5V Input Compatible — Works with Arduino Uno, ESP32, ESP8266, Raspberry Pi, and most common microcontroller boards
- Wide Temperature Operation — Rated for -55°C to 110°C for stable performance in industrial and hobbyist environments
- Input Status LED — Onboard LED indicates when the input signal is active
- Screw Terminal Connections — Input, output, VCC, and GND screw terminals for solder-free wiring
- 5-Pack Value Set — Includes 5 modules, each measuring 40.3 x 14.9mm, for multiple projects or spare replacements
SPECIFICATION
| Specification | Value |
|---|---|
| Product Type | Optocoupler Isolation Module |
| Chip | EL817 / PC817 |
| Isolation Voltage | Over 3000V |
| Input Current | Up to 50mA |
| Output Current | Up to 50mA |
| Max Signal Frequency | 5KHz |
| Input Voltage | 3V to 5V |
| Operating Temperature | -55°C to 110°C |
| Indicator | Input status LED |
| Connections | Screw terminals (INPUT, OUT, VCC, GND) |
| Board Dimensions | 40.3mm x 14.9mm |
| Weight | 8g (per module) |
| Package Quantity | 5 pieces |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi |
COMPATIBLE HARDWARE
- Arduino boards (UNO, Mega, Nano, etc.) — 5V input signal isolation
- Arduino Uno R4 WiFi/Minima — 5V or 3.3V input signal isolation
- ESP32 development boards — 3.3V GPIO signal isolation
- ESP8266 boards (NodeMCU, Wemos D1, etc.) — 3.3V GPIO signal isolation
- Raspberry Pi (all models) — 3.3V GPIO signal isolation
- Raspberry Pi Pico — 3.3V signal isolation
- PLCs and industrial controllers — Isolated digital input/output interfacing
- Relay modules and motor drivers — Isolated control signal switching
- Any microcontroller with 3-5V digital output — Signal isolation and protection
