D

Deckhead Mounting Box

A robust metal or plastic unit which can be used with Series 60 or XP95 devices to protect against the ingress of water or other contaminants through the rear of the base.

To find out more, download our Deckhead Mounting Box PIN sheet by clicking here.

Detector

A device for discovering the presence of a fire.

Digital Protocol

A digital protocol comprises a series of binary digits (1's & 0's), and is used as a method of communication between electronic devices.

To find out more, download our Protocols PIN sheet PDF.

DirtAlert

DirtAlert is a feature of Orbis which uses a flashing yellow LED to show that the drift compensation limit has been reached.

To find out more, visit the Orbis page.

Discovery ®

An advanced range of analogue addressable devices manufactured by Apollo.

To find out more, visit the Discovery page.

DIN-Rail

Rail mounted electronic assembly housing, compliant with the German standard DIN 46277.

Drift Compensation

A signal processing algorithm which compensates for detector contamination or environmental conditions and maintains the desired sensitivity level.

Drift compensation is a feature of Discovery and Orbis detectors

DustDefy

The DustDefy system is a feature of Orbis which prevents dust ingress while maintaining airflow.

To find out more, visit the Orbis page.