Yes, sensor is a Scrabble word!
...and is worth 6 points in Scrabble, and 7 points in Words with Friends
sensor
Noun
1. Any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner
What Scrabble words can I make with the letters in sensor?
6 Letter Words
5 Letter Words
4 Letter Words
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3 Letter Words
2 Letter Words