Multifunctional relay module for use with CO and smoke alarms
US7423543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Mar 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B17/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A multi-function relay module for use with a series of hazardous condition detectors that are interconnected by an interconnect line. The relay module is positioned between the interconnected hazardous condition detectors and one or more auxiliary devices such that the relay module can selectively activate each of the auxiliary devices. The relay module receives the interconnect signal and determines whether the interconnect signal is indicating a first sensed condition or a second sensed condition. A selection signal having multiple states is received by the control unit. The control unit is programmed to respond to the type of sensed condition indicated by the interconnect signal based upon the state of the selection signal. Thus, the relay module can selectively respond to either the first sensed condition, the second sensed condition or either of the first or second sensed conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.