Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-01-19
2000-08-01
Lee, Benjamin C.
Communications: electrical
Condition responsive indicating system
Specific condition
3406861, 315 84, G08B 1308
Patent
active
060972904
ABSTRACT:
A entrance actuated lighting activating system wherein a control logic system is used to activate and de-activate the area lighting of a room by monitoring the entrance door in order to detect when people enter or leave the room.
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