Wireless sensors are devices that collect sensory information from local environments. This hardware monitors its surroundings and detects changes in stimuli, such as air temperature, movement, lighting, and liquid leakage. They are programmed to interact with central gateways, hubs, and servers, with all nodes arranged to support the network developer’s objectives. Wireless sensors are usually distributed across large areas, and some networks contain anywhere from hundreds to thousands of them at one time.