LF-HD-42 Conventional Heat Detector with BatteryThis battery operated heat alarm provides crucial fire protection in environments where smoke detectors may be unsuitable, such as kitchens, garages, or dusty workshops. It uses a reliable thermistor to detect a fixed temperature, triggering a loud 85dB alarm when the thermal limit is reached to provide an effective warning against fast developing fires. Key Specifications: Model: LF HD 42 Detection Method: Fixed Temperature Thermal Sensor Temperature