key fob
US /ˈkiː fɑːb/
UK /ˈkiː fɑːb/

1.
llave inteligente, mando a distancia del coche
a small remote control device that allows you to lock and unlock a car or other vehicle without using a key, and often to start the engine or open the trunk remotely
:
•
I accidentally locked my key fob in the car.
Accidentalmente dejé mi llave inteligente dentro del coche.
•
My car's key fob needs a new battery.
La llave inteligente de mi coche necesita una batería nueva.