The Kidde Commercial AlarmLine II linear heat detector (LHD) is a cable based temperature monitoring system that provides detection of abnormal changes in the ambient temperature within commercial and industrial applications. The AlarmLine II linear heat detector provides an economical solution for applications where other forms of detection may not be suitable. The AlarmLine II product range is split into two sub-ranges, AlarmLine II analogue and AlarmLine II digital, providing customers and end users with a wide range of solutions to meet the requirements of many different applications.

A wide range of installation accessories are available to complement the AlarmLine II analogue and digital systems. Fixing clips, junction boxes, as well as specialist application accessories such as cable reelers are available. All accessories are compatible with both analogue and digital LHD systems.