Signaline HD+ is a programmable linear heat detector that allows users to set custom alarm temperatures, pre-alarm points, and rate-of-rise alerts. Its special sensor cable acts as a continuous heat detector, sensing temperature changes along its length through variations in cable resistance. The smart control unit constantly monitors the cable and lets users configure alarm rules based on risk level, area, or standards. Beyond detecting high temperatures, Signaline HD+ also identifies rapid temperature increases, enabling early fire detection. Approved to EN54 Part 22 (VdS) and UL 521 standards, the system is fully resettable—after a heat event, it can quickly return to operation without replacing the cable. Once the cable cools, users can reset the system manually or automatically, reducing downtime and maintenance costs.