Description �� PC817 2-Channel Optocoupler Isolation Module – 3.6–30V Signal Isolation Board | AuscomTech The PC817 2-Channel Optocoupler Isolation Board is designed to provide safe, reliable electrical isolation between low-voltage control logic and higher-voltage circuits. Using PC817 photoelectric optocouplers, this module protects sensitive microcontrollers from voltage spikes, noise, and ground loops while enabling clean signal transfer. It is ideal for Arduino, ESP32, Raspberry Pi, PLCs, and industrial control systems, allowing 3.3V or 5V logic signals to interface safely with 3.6–30V control circuits. ⭐ Key Features �� Photoelectric Isolation (PC817)Provides galvanic isolation between input and output, protecting MCUs from high-voltage interference. �� 2 Independent ChannelsTwo fully isolated signal channels allow simultaneous control or sensing. ⚡ Wide Voltage CompatibilitySupports control signals from 3.6V to 30V, ideal for 12V and 24V systems. �� Logic-Level FriendlyCompatible with 3.3V and 5V logic from Arduino, ESP32, STM32, Raspberry Pi, and PLCs. �� Configurable Output LogicJumper-selectable high-level or low-level output, adapting easily to different control requirements. �� Noise & Ground Loop ProtectionExcellent for noisy environments, long cable runs, and mixed-voltage systems. �� Technical Specifications Specification Details Optocoupler PC817 Channels 2 Input Signal Voltage 3.6V – 24V Output Voltage Range 3.6V – 30V Max Output Current 10mA Signal Frequency ≤ 4kHz Output Logic High / Low (jumper selectable) Isolation Method Photoelectric Dimensions 37 × 30 × 10 mm ⚠️ Note: Voltage and output current are inversely proportional. Not suitable for high-speed pulse signals above 4kHz due to PC817 switching limitations. �� Compatible With • Arduino (Uno, Mega, Nano)• ESP32 / ESP8266• Raspberry Pi (GPIO isolation)• STM32 microcontrollers• PLC digital inputs• Relay & MOSFET driver circuits ⚙️ Typical Applications • MCU to high-voltage signal isolation• 3.3V / 5V to 12V / 24V level shifting• Relay, MOSFET, and transistor driving• Industrial sensor & actuator interfacing• Noise suppression and EMI protection• Ground loop isolation• Automation and control systems �� Package Includes • 1 × PC817 2-Channel Optocoupler Isolation Module
