PHOTOCELLS
Scrabble letter values: P3H4O1T1O1C3E1L1L1S1 = 17
Definition
PHOTOCELLS is the plural of PHOTOCELL.
noun PHOTOCELL: a transducer used to detect and measure light and other radiations.
Synonyms of PHOTOCELL: photoelectric_cell, photoconductive_cell, electric_eye, magic_eye