It's a remote. Could be nitro cap, could be cross-delayed definitely not homemade, definitely not American. I mean, it could open up a garage door, or blow up some C-4.
10 seconds sound clip from the Rush Hour (1998) movie soundboard.
You can hear this line at 00:48:13 in the Blu-ray version of the movie.
Quote context
[...]
- Sorry we got you in trouble.
- Yeah, he's sorry he got you in trouble.
- Look, tell me something about this I don't know, okay? Come on.
- C-4?
- Hey, I'm sorry about spreading all those rumors on Christmas about us sleeping together. I'm sorry.
[...]