发明名称 |
Smoke detector with remote alarm indication |
摘要 |
A smoke detector receiving at two input terminals DC power from a remote source not only gives an alarm indication in response to a significant density of smoke, but senses the polarity of DC power at the terminals and generates a secondary signal, distinguishable from the alarm signal, when the polarity of power source is reversed.
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申请公布号 |
US4517555(A) |
申请公布日期 |
1985.05.14 |
申请号 |
US19840601256 |
申请日期 |
1984.04.17 |
申请人 |
AMERICAN DISTRICT TELEGRAPH CO. |
发明人 |
MARSOCCI, ANGELO A.;SCHUCHARD, WALTER F. |
分类号 |
G08B17/10;G08B23/00;(IPC1-7):G08B19/00 |
主分类号 |
G08B17/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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