The Vent-Axia Lo Carbon Centra Extractor Fan has a humidistat, timer and pull cord override. It is a dual speed continuous running fan for kitchens, utility rooms, bathrooms and toilet, with trickle speed selection at installation. Automatically boosted by the built in humidistat or the built in pullcord which activates the overrun timer (adjustable up to 30 minutes).   Features: Part F compliant, System 3 Continuous mechanical extract SAP Appendix Q eligible - Low SFP on SAP Q Quietest dMEV available Discreet, tasteful styling Single fan for use in all applications IPX4 rated - IPX7 rated (SELV) Constant volume option Normal and Boost speeds Lo-Carbon motor offering 90% energy savings and long life 5 Year Motor Guarantee Suitable for wall, ceiling, panel and window mounting   Specifications: Extract Performance (l/s) Low: 6 Extract Performance (l/s) High: 9 Power consumption Low: 1.4W Power consumption High: 1.6W Power consumption Boost: 15W Sound dB(A)@ 3m Low: 10.8 Sound dB(A)@ 3m High: 15.5 Sound dB(A)@ 3m Boost: 2.4 Boost: 25.2 Dimensions: H: 160mm x W: 160mm x D: 150mm