Kidde Global Solutions

Linear Heat Detection

The AlarmLine II linear heat detector (LHD) is a cable-based temperature monitoring system that detects abnormal changes in ambient temperature — an economical solution for commercial and industrial applications where other forms of detection aren’t suitable.

Cable-based, continuous monitoring

Analogue and Digital sub-ranges

Wide range of installation accessories

Economical where other detection can't

Temperature monitoring, along the full length of the cable.

AlarmLine II Analogue and Digital share the same accessory range — fixing clips, junction boxes and cable reelers, compatible across both.

Product Catalog

Choose your AlarmLine II range.

Two sub-ranges, providing a wide range of solutions to meet many different application requirements.

AlarmLine II Analogue

Continuous cable-based temperature monitoring with analogue signal processing.

Explore ›

AlarmLine II Digital

Digital linear heat detection, with the same accessory compatibility as the analogue range.

Explore ›

Interested in being a partner?

We provide more than a product. Every partner gets our full services, partner program, training and more — the same support network behind every Kidde Global Solutions installation worldwide.

Linear heat detection for harsh environments

Linear heat detection uses a heat sensing cable that detects a rise in temperature anywhere along its length. It continues to work where dust, moisture, vibration or extreme temperatures would defeat other detectors, and it can follow the shape of the asset it protects.

Typical uses are tunnels, conveyor belts, cable trays and cable tunnels, car parks, cold stores and industrial plant. Resettable linear heat detectors are covered by EN 54-22 in Europe. AlarmLine II from Kidde Global Solutions is designed for these demanding applications.

Related: Flame detection · Industrial fire detection · All fire detection and security systems