Document Type and Number:
Japanese Patent JPH0449755
Kind Code:
Y2
Abstract:
A photoelectric smoke sensor terminal has an address signal detector for detecting whether or not an address assigned to the terminal coincides with an address represented by an address signal from a main unit. Only when the coincidence signal is supplied to a switch circuit is a photoelectric smoke sensor turned on. The terminal also has an item data memory for supplying item data (e.g. gas leakage and smoke generation data) so that a plurality of item data signals together with an output signal from the sensor can be transmitted on a single transmission line.
Application Number:
JP15889982U
Publication Date:
November 24, 1992
Filing Date:
October 22, 1982
Export Citation:
International Classes:
G01N21/53; G08B17/00; G08B17/10; G08B17/103; G08B23/00; G08B25/00; G08B26/00; (IPC1-7): G08B23/00; G01N21/53; G08B17/00; G08B17/103
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