| 摘要 |
A fire safety apparatus is provided combining a detector, an alarm system, and an extractor / ventilation fan. The detector is arranged to detect a variety of gases including, smoke, hydrogen cyanide, and carbon monoxide. Upon detecting a build up of gas, an alarm may be prompted, and/or the extraction / ventilation fan may be operated to extract the build up. The apparatus may be mains powered, and may include a battery backup. The apparatus may be mounted on an exterior wall or roof such that the fan moves air from an interior space of a building to an exterior space. |
