The 4-Channel Infrared Tracing Module is a versatile sensor designed for line-following robots and path detection applications. It features four infrared sensors that detect black and white surfaces based on reflected IR light, providing precise digital outputs for accurate navigation. With a 5V operating voltage, it is compatible with various microcontrollers such as Arduino, AVR, ARM, and PIC. Each sensor channel includes an onboard LED indicator and adjustable sensitivity via potentiometers. This module is ideal for robotics projects requiring reliable path tracking, maze solving, or edge detection, offering enhanced stability and performance over 3-channel alternatives for complex tasks.