An IoT gateway is a device that connects IoT sensors to the cloud or data center. It collects data from multiple devices, filters it, and sends it to the cloud for analysis. Without an IoT gateway, sensors and devices may not be able to communicate with each other or the internet. In smart water systems, IoT gateways help send real-time data from water meters, valves, or tank sensors to the central monitoring platform. They ensure reliable, secure, and efficient data flow in remote or complex environments.

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