K400

K400 is a designation that has been applied to several different entities, most notably a type of radar detector and a model of camera.

The K400 radar detector was a product manufactured by Whistler. It was designed to alert drivers to the presence of police radar. Like other radar detectors, it operated by receiving and processing radio waves emitted by radar guns. Different models of radar detectors, including those bearing the K400 designation, offered varying levels of sensitivity and detection capabilities for different radar bands.

Separately, K400 has also been used to identify a camera model. For instance, certain digital cameras or lenses might carry this designation as part of their product name or series. These cameras would typically be digital devices used for capturing still images or video, with their specific features and capabilities determined by the manufacturer and model.

In other contexts, K400 might appear as a part number, a code in a scientific or engineering specification, or a less common identifier for a distinct object or system. Without further context, specifying the exact nature of a "K400" can be ambiguous due to its potential application across diverse fields.