A thermal detector, unlike a flame detector senses _______.

A thermal detector is designed to sense changes in temperature, specifically by detecting rapidly rising temperatures in its environment. This capability allows it to respond effectively to conditions that could indicate the presence of a fire or overheating machinery. Unlike flame detectors, which primarily identify the presence of flames by capturing infrared or ultraviolet radiation, thermal detectors focus on the heat emitted during a fire or other temperature-related incidents. This differentiates their operational principles and applications significantly from those of flame detectors, which are reliant on light detection. The ability of thermal detectors to monitor temperature changes continuously makes them a crucial component in safety systems, ensuring early detection and response to potential hazards.