System for testing NAC operability using backup power
US8558711B2 · kind B2 · utility
3Cited by
10References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2007 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/389
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitoring system for a NAC (Notification Appliance Circuit) is provided. The monitoring system includes a system controller, and a NAC comprised of notification appliances that may be in a series. The NAC and its appliances may be operatively coupled to the system controller. The system controller is operable to determine whether a notification appliance has sufficient voltage at a low voltage operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.