4 Channel Relay Module with Optocoupler 5V for Arduino DSP AVR PIC Arm AB0188

Features:

• Built-in ESP8266 WiFi module for wireless communication
• 5V single-channel relay for switching electrical loads
• Supports remote control through WiFi network
• Compatible with Arduino IDE programming
• Compact PCB design for easy installation
• Suitable for smart home and IoT applications
• Can control AC and DC appliances remotely
• Easy GPIO access for custom projects

Applications:

• Home automation systems
• Smart light control
• Wireless appliance switching
• IoT-based automation projects
• Remote motor and pump control
• Robotics and embedded systems
• Industrial monitoring and automation