04160246 is referenced by 39 patents and cites 4 patents.

A wireless smoke detector apparatus including at least one detector/transmitter unit and a receiver/annunciator unit. The detector/transmitter having a pulsed infrared radiation source, a photodetector having an optical axis angularly intersecting the axis of the radiation source for detecting radiation scattered by smoke particles and a transmitter responsive to the output of the detector for transmitting a unique receiver/annunciator actuating signal which is distinguishable by the receiver/annunciator from other actuating signals.

Title
Wireless multi-head smoke detector system
Application Number
5/839074
Publication Number
4160246
Application Date
October 3, 1977
Publication Date
July 3, 1979
Inventor
Ralph P Miller
Sunnyvale
CA, US
Stephen M Martin
Pleasanton
CA, US
Agent
Ronald J Meetin
Robert C Colwell
Alan H MacPherson
Assignee
Fairchild Camera and Instrument
CA, US
IPC
G08B 17/10
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