| 摘要 |
<p>Apparatus for ventilating a room has a high throughput extractor and/or intake duct (12, 14) and a lower throughput sampling duct (16) with a sensor (30) used by control means (38) to control extractor and/or intake fans (32, 34) with an order of priority among possible ventilation responses according to the levels of different contaminants (humidity, smoke, carbon monoxide, radon).</p> |
