4-Channel 12V Relay Module

[4 RELAY CHANNELS]: Controls 4 devices at once—ideal for home automation, industrial control, robotics, and DIY projects. [12V DC OPERATING VOLTAGE]: Works with 12V systems, fully compatible with Arduino, Raspberry Pi, ESP32, and PLCs. [HIGH & LOW LEVEL TRIGGER]: Supports both trigger modes for easy integration with sensors, microcontrollers, and automation systems. [SAFE OPTICAL ISOLATION]: Built-in optocouplers protect sensitive electronics and ensure stable, reliable operation. [EASY SETUP & MONITORING]: Pre-soldered design with screw terminals and status LEDs on each channel for hassle-free installation and real-time feedback.