
This is a sub-sonic impact SENSOR.
The Big Bang Theory Season 1, Episode 11

Now, you'll need to get the SENSOR
close to Sheldon's room.
The Big Bang Theory Season 1, Episode 11

controlled by a seismic SENSOR.
Money Heist Season 3, Episode 3

...and the SENSOR apparatus will rest on it.
The Big Bang Theory Season 1, Episode 12

HOWARD:
Told you the SENSOR would work.
The Big Bang Theory Season 1, Episode 11