Remote built heritage sites face increasingly complex threats from climate, environment, and human activity, challenging traditional preservation methods. The ARGUS EU project introduces a novel, sensor-driven strategy for preventive preservation, tailored to remote and infrastructure poor heritage contexts.

This paper presents the threat to sensor mapping framework developed in ARGUS, aligning sensor types with site specific preservation risks. By combining heterogeneous sensing modalities, low power communication protocols, and risk informed design, the system supports actionable early warnings and long term monitoring.

Deployments across five pilot sites address key preservation threats: structural deformation, freeze thaw cycles, environmental degradation, and biological growth. We describe the sensor selection rationale, installation strategies, and early operational insights across varied heritage contexts.