IoT sensors, also known as Internet of Things sensors, are devices that collect data from the physical environment and transmit it to an IoT platform for analysis and processing. These sensors are typically small and inexpensive, and can be embedded in various types of objects or devices.

IoT sensors can collect a wide range of data, such as temperature, humidity, pressure, motion, light, sound, and more. They use various types of sensors, such as accelerometers, gyroscopes, thermometers, barometers, and microphones, to detect changes in the environment.

The data collected by IoT sensors can be used for a variety of applications, such as monitoring and controlling industrial processes, tracking the location of assets, monitoring the health and well-being of people and animals, and more. IoT sensors can also be used to automate tasks and improve efficiency, by providing real-time data that can be used to optimize processes and make informed decisions.

IoT sensors typically use wireless communication protocols, such as Bluetooth, Wi-Fi, Zigbee, or LoRaWAN, to transmit data to an IoT platform or gateway. The IoT platform then processes the data, applies machine learning algorithms to detect patterns and anomalies, and presents the results to users through a dashboard or mobile app.

Overall, IoT sensors play a critical role in enabling the Internet of Things, by collecting data from the physical world and enabling intelligent decision-making in a wide range of applications.