PC817 8-Channel 3.6V-30V Optocoupler Isolation Board Voltage Converter Module
8-Channel PC817 Optocoupler Isolation Module. Isolates input from output with LED indicators. Input 3.6V-24V; output 3.6V-30V; up to 50 mA per channel. Ground jumper optional for full isolation. Ideal for Arduino, ESP32, Raspberry Pi, and industrial sensors. Ships from USA with free USPS tracking.