Local control apparatus for central station alarm system
US4459582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1983 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Mar 10, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B26/00
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a central station alarm system the alarm sensors associated with a particular subscriber's premises are monitored by a local control unit associated with those premises and controllable by the subscriber. The local control unit automatically reminds the subscriber when he is supposed to close the premises and turn on the system. The local control unit allows the subscriber to change his expected closing time. The local control unit may also perform various other functions such as automatically cutting off power to low priority alarm sensors during a prolonged power failure, automatically cancelling any audible alarm indication silence commands when there are no alarms to silence, and automatically forming a bridge connection between the remote ends of two communication circuits when there is a break in either circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.