These requirements cover components of central-station burglar -alarm systems intended and specifically designated for burglary-protection use at mercantile and
bank ing premises, on mercantile safes, and on bank safes and vaults.
The components covered by these requirements are in tended for use in a burglar-alarm system in which the operations of electrical protection circuits and devices
are transmitted automatically to, recorded in , maintained from, and supervised from a central-station that employs trained operators and alar m investigators who are
in attendance at all times.
These requirements serve as the basis of classification of a central-station burglar-alarm system as a Grade C, Grade CC, Grade B, Grade BB, Grade A, or Grade
AA system, by virtue of the construction and performance requirements for components of that system. However, requirements covering the complete systems are
contained in the Standard for Central-Station Burglar-Alarm Systems, UL 611.
| Edition : | 3rd |
| Number of Pages : | 128 |
| Published : | 10/26/1998 |
