IoT (Internet of Things) systems rely heavily on sensors to collect real-time data from the physical world. These sensors play a vital role in enabling smart applications across industries such as healthcare, agriculture, manufacturing, transportation, and home automation. Some of the most commonly used IoT sensors include temperature sensors, which are used in HVAC systems, smart agriculture, and food storage monitoring. Motion sensors and proximity sensors are essential for security systems, smart lighting, and automation in retail and industrial settings.

Humidity sensors are used in weather stations, agriculture, and pharmaceutical environments, while pressure sensors find applications in smart vehicles and industrial equipment monitoring. Gas sensors are critical for air quality monitoring and safety in chemical plants. Accelerometers and gyroscopes are often found in wearable devices, drones, and smart mobile equipment for detecting orientation and movement. Optical sensors are used in smart lighting, surveillance, and gesture control applications. Finally, image and sound sensors are increasingly integrated into smart surveillance systems, voice-controlled assistants, and smart healthcare devices.

Understanding and choosing the right sensors is foundational for building efficient IoT systems. To explore more about sensors and systems, consider an IoT professional certification. For this, visit on the official course site.