That's the door, maybe booby-trap. We won't take any chances if we use the Bat-beam.

6 seconds sound clip from Batman (1966) - The Purr-fect Crime (S1E19) TV Series.

You can hear this line at 00:17:55 in the Blu-ray version of the movie.

Quote context

[...]

- Only the Catwoman'd choose a hideout with those names.

- I'm glad you're upping your foreign languages, Robin. They come in handy when fighting crime.

- Si, si, Batman, what do we do now?

- There are no entrances and only one door, we have no choice. We'll use the Bat-beam and the Batmobile.

- Why don't we walk right in?

- That's the door, maybe booby-trap. We won't take any chances if we use the Bat-beam.

- Stand by for Bat-beam.

- You're right again, Batman, we might have been killed.

- Or worse. Now, let's go.

- The door!

- Seems, it would be more difficult getting out of here than it was getting in.

- Good evening, Batman and Robin Welcome

[...]