key fob

US /ˈkiː fɑːb/
UK /ˈkiː fɑːb/
"key fob" picture
1.

遥控钥匙, 智能钥匙

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.
我不小心把遥控钥匙锁在车里了。
My car's key fob needs a new battery.
我汽车的遥控钥匙需要新电池。