Specifications

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and location.
access keypads - a programming option that allows door access reports to be sent to a receiver. A
report is sent with each door access made from selected keypads. Keypads at addresses not selected
still operate the door strike relay but do not send door access reports.
access level - access priorities.
access point - a door, gate, or other barrier through which people or vehicles can gain access to a
defined area.
access privileges - controls placed on network services that limit and control user access through
doors.
account number - all reporting systems have an account number that identifies them at the central
station. The account number is included along with any reports the panel sends to the receiver.
acknowledge - to confirm that a message or signal has been received, such as by the pressing of a
button or the selection of a software command.
action - a zone programming option that selects the action of any outputs activated by changes in the
zone's condition. The four options are: steady, pulsed (one second on, one second off), momentary
(one second on for one time only), and follow (on when the zone is off normal, off when the zone
restores).
activity report - a record of openings, closing, alarms, and other signals received from a protected
premise and maintained by the central station alarm company.
address - 1. a switch setting on a keypad, zone expander, or other device that reflects its assigned
position on a data bus. Zone expanders, for example, are addressed so that the panel is able to
associate its on-board zones with their programmed location and characteristics held in memory. 2. A
sequence of bits used to identify devices on a network. Each network device must have a unique
address. Addresses fall in two categories: physical hardware addresses and logical protocol addresses.
addressable device - an alarm system component with discrete identification that can have its status
individually identified or that is used to individually control other functions.
adverse condition - any condition occurring in a communications or transmission channel that
interferes with the proper transmission or interpretation, or both, of status change signals at the
supervising station.
alarm - a condition in which one or more armed zones in the system have been faulted. Almost all
alarms sound some form of audible device locally except in the cases of silent panic or ambush alarms.
alarm bell - a bell or siren installed on the protected premises that gives indication of an alarm
condition to persons inside or nearby.
alarm control - a device that permits an alarm system to be turned on and off and provides electrical
power to operate the system. Every alarm system must have an alarm control.
alarm initiating device - a device which, when actuated, initiates an alarm. Such devices, depending
on their type, can be operated manually or actuated automatically in response to smoke, flame, heat,
or water flow.
alarm module - an add-on device to monitor a series of sensors and initiate warning devices if
required.
alarm panel - the main controlling CPU in the alarm system to which all zones, phone lines, and
devices are connected.
alarm receiver - a receiver that is designed with the main purpose of receiving alarm events.
Receivers are usually located and maintained at a central station company.