Security alarm system
US4559526A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1983 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Apr 6, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A security system comprising a plurality of sensors for detecting emergencies in a predetermined guard area, a transmitter-receiver for converting the emergency data into electric signals and transmitting the electric signals via a radio, a repeater for receiving the electric signals from the transmitter-receiver and transmitting the signal to a security controller, a security controller for setting a guard mode such as "start watch", and "release the watch" and transmitting the emergency and ordinary data to a central station through a transmission line such as a telephone cable or personal circuit, and a central station for supervising the predetermined guard area based on the data from this and other security controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.