4pcs DC 5V 2-Channel Relay Module With Optocoupler Low Level Trigger Expansion Board Compatible With Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry PI

Dual-Channel Relay: Features 2-channel relays, allowing for versatile control of multiple devices or circuits simultaneously.

Optocoupler Technology: Utilizes optocouplers for reliable isolation between the control signal and the relay, ensuring enhanced safety and stability.

Low Level Trigger: Supports low-level trigger signals, making it compatible with a wide range of microcontrollers and development boards.

Extensive Compatibility: Compatible with various platforms including Arduino R3, MEGA 2560, Raspberry PI, and more, offering flexibility for different project requirements.

Easy Expansion: Provides a simple and effective way to expand the capabilities of your microcontroller projects, ideal for automation and home electronics applications.