2CH Active HL 3V OptoCoupler Relay Module

The 2 Channel Active High/Low 3V OptoCoupler Relay Module is designed for low-voltage logic systems that require safe and reliable control of external devices. Operating at 3V logic level, this module is fully compatible with microcontrollers such as ESP8266, ESP32, Raspberry Pi, and other 3.3V platforms.

Each channel is equipped with optocoupler isolation, protecting sensitive control circuits from voltage spikes and electrical noise. The module supports both active high and active low triggering, providing flexible control options for different system designs.

This relay module is widely used in IoT applications, automation systems, smart home projects, and embedded control solutions where electrical isolation and reliable switching are essential.