Burglar alarm photoelectric cell designed by the US physicist and inventor Robert C Burt (b. 1896). Photoelectric cells are used to convert light falling on them into electricity. In an alarm system, the absence of light falling on the cell and the resulting drop in electrical current triggers the alarm.
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Details
Creative#:
TOP26811843
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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