Is there any way that i can make something wireless?

[iiSzYuHBoii]

do they sell something or is there something that i can make that i can connect to each side of wires and make it wireless . such as a light to get a wireless switch . and i heard that when you buy the remote to unlock a car and stuff, it comes with a box thats supposed to go inside the car . can that work ? i really wanna try it . help mee !

 

[Unregistered]

I am trying to figure out the same.