motion sensor

Example: 
The bank's security system included a motion sensor that could detect the movement of intruders.
Intel Free Press
https://flic.kr/p/cSweR7
Photo license: 
CC: Attribution, Commercial Use
Regionalism: 
Neutral
Regional variant: 
Neutral
Full Expression: 
: motion sensor
French
Add or change French Photo: 
No
Spanish
Add or change Spanish Photo: 
No
German
Add or change German Photo: 
No
Portuguese
Add or change Portuguese Photo: 
No

a device that contains a physical mechanism or electronic sensor that tracks motion

Chinese
Add or change Chinese Photo: 
No
Italian
Add or change Italian Photo: 
No
Alsacien
Add or change Alsatian Photo: 
No
Feedback