HOWARD:
Told you the SENSOR would work.
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
This is a sub-sonic impact SENSOR.
The Big Bang Theory Season 1, Episode 11
to activate the motion SENSOR.
The Big Bang Theory Season 5, Episode 2
...and the SENSOR apparatus will rest on it.
The Big Bang Theory Season 1, Episode 12