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The Combo IR Proximity Sensor 5V One Channel Relay Module with Isolation is a versatile electronic module commonly used in various automation and control applications. Here is a brief description of its key features and functionality: The module is equipped with an infrared proximity sensor that can detect the presence of objects within its detection range without physical contact. This sensor utilizes infrared technology for accurate and reliable object detection. The IR proximity sensor's sensitivity can often be adjusted, allowing users to customize the detection range according to specific application requirements. This feature enables precise object detection and flexibility in different environments. The module provides a digital output signal based on the input from the infrared sensor. When an object is detected within the sensor's range, the digital output is triggered. This output signal can be used to control other electronic devices or microcontrollers. This combo module finds applications in automation, robotics, security systems, and interactive devices. It can be used for tasks such as automatic door control, object detection, home automation, and industrial automation, among others. The isolation provided by the relay ensures that the low-voltage components are protected from potential voltage spikes or interference that might occur in the high-voltage devices being controlled. This isolation enhances the safety and reliability of the module in different applications. The module typically comes in a compact and durable housing, making it suitable for both prototyping and commercial applications. Its robust design ensures longevity and reliable performance even in challenging environments.