The Xpelair DX100HTA is a stylishly designed compact single speed extractor fan with a delay timer and an integral adjustable humidity sensor and which is truly easy to install. It is suitable for domestic installations such as bathrooms and shower rooms (including zones 1 and 2) and toilets. It is also suitable for use in commercial environments such as hotel bathrooms, office toilets and other small rooms. What's the difference between the old DX100H and the new DX100HTA? - The new model has much more advanced humidity sensor which allows for slower increases in humidity without operating the fan (less than 5% RH in 5 minutes). This prevents nuisance triggering of the fan. The entire range have a soft curved 'flowline' grille which will complement any wall or ceiling decor and a compact window installation is ensured by the shallow depth of the outlet spigot. They are all suitable for 220-240V 50Hz mains operation, have lubricated for life motors, Class B insulation for operation in ambient temperatures up to 40 degrees Centigrade Fitted with a thermal cut out. Max Wattage: 12w Surpasses IEE wiring regulations for bathroom zones 1 & 2 Softly curved flowline grille Finger Guarding for additional safety protection 'Lubricated for life' motors fitted with a thermal cut-out Colour: White 3 Year Manufacturer's Guarantee