2 Channel 5V Relay Module with Optocoupler

Description

• Dual Relay Channels: This module features two independent relay channels, allowing you to control two separate electrical circuits or loads simultaneously.
• 5V Operating Voltage: The module operates at a 5V input voltage, making it compatible with commonly used microcontrollers and digital logic circuits.
• Optocoupler Isolation: An optocoupler (also known as an optoisolator) is integrated into each relay channel, providing electrical isolation between the control circuit (input side) and the load circuit (output side). This isolation enhances safety by preventing voltage spikes and noise from affecting the microcontroller.
• High Current Handling: The relays on the module can typically handle relatively high currents, making it suitable for controlling devices with moderate to high power requirements.
• Normally Open (NO) and Normally Closed (NC) Contacts: Each relay channel includes both normally open (NO) and normally closed (NC) relay contacts, offering flexibility in configuring the relay’s behavior for latching or non-latching operations.
• LED Indicators: Built-in LED indicators provide visual feedback of the relay states (on or off), allowing for quick status checks.
• Screw Terminal Blocks: The module typically includes screw terminal blocks for secure and convenient connection of external wires, simplifying the wiring process.
• Low-Level Trigger Input: The relays are activated with a low-level trigger signal, making them compatible with most microcontrollers and digital circuits.
• Versatile Applications: Suitable for various applications, including home automation, robotics, industrial control systems, DIY projects, and prototyping.