Technical terms spanning standards, manufacturers, commissioning, networking, testing and fault finding.
Technical guidance only. Confirm current project requirements against the applicable standards, legislation, system documentation and site-specific fire strategy.
Showing 9 of 9 matching glossary entries.
A panel indication that the charging circuit or the batteries are outside limits — aged batteries, poor connections or a failed charger stage.
Check battery date codes and terminal voltage under load before condemning the charger.
The site-specific document mapping every alarm input to its required outputs (sounders, dampers, doors, plant, signalling); the reference for commissioning and testing.
An unversioned or missing matrix is a defect worth reporting in its own right.
The resistor, capacitor or active unit at the end of a monitored circuit that lets the panel supervise the wiring for open and short circuit faults.
An intruder alarm specified to a grade matching the assessed intruder skill and risk, driving supervision, tamper and signalling requirements.
Check insurer requirements before modifying anything on a graded system.
A monitored input/output device connecting the fire system to other building systems — plant, dampers, lifts, security — under cause-and-effect control.
A loop device that disconnects a faulted section (typically a short circuit) so the remainder of the loop keeps operating.
When the panel shows 'isolator operated', the isolated section is your search area.
The two-wire circuit connecting addressable devices to the panel, normally wired as a ring so devices remain in communication from either direction if the ring is broken at one point.
A powered damper in ductwork controlled to restrict smoke movement; the test is trigger → movement → position feedback, not just a status LED.
Supervision detecting opening or removal of security equipment, active whether the system is set or unset.