Key fob是什么意思

"Key fob" is a term used to describe a small, portable device that is used to unlock or lock a vehicle, building, or other secure area without the need for a traditional key. It is typically a small, handheld device that emits a radio signal or infrared beam when pressed, which is then received by a receiver in the vehicle or building.

Key fobs are often used in conjunction with modern security systems, and they can provide an added level of convenience and security compared to traditional keys. They are commonly used in cars, but they are also used in homes, offices, and other buildings.

In some cases, key fobs may also be used to start the engine of a vehicle, or to activate other features such as the alarm system or the trunk release. Some key fobs may also include additional buttons or functions, such as a panic button or a remote start button.