Doc Ref: SL-068 v1.35 pg 3
Typical Models Covered By This Manual
TOC-750 Series Hazardous Gas detectors can be supplied in a number of formats. Some
typical models are indicated in the diagram below. All 750 Series detectors and annunciators
use a common ‘module’ PCB as indicated below to interface between the detector or interface
and the control panel using IGD’s S 2-Wire protocol. A single 2-Wire ‘Highway’ can
support up to 32 devices interfaced using the ‘module’ PCB. Highways can be up to 1000M long
depending on cable size and detector types.
TOC-750 Room Status Indicator
TOC-750 Annunciator
With MK7 Gas Detector
TOC-750 Series Safe Area
Gas Detector
TOC-750 ATEX Hazardous Area
Gas Detector
2 Core Cable Highway For
Power and Communication
Between Module PCB’s
and Control Panel
