Word forms: (regular plural) photocells
( Electrical engineering : Electronics components )
is a device that is used to detect
and measure light.
The dusk to dawn photocell sensor switch will switch items such as lights and fans on during the night and off
during the day.
A photocell sensor can be regarded as a transducer that is used to detect the light intensity.
A photocell is a device that is used to detect and measure light.
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