Features:Minimalist heating element which is almost completely internalised within the towel rail - 5 options available2 heat settings of 45°C and 60°C to regulate the internal temperatureInternal electronic sensor allows the ONE D to maintain the set temperatureMulti-coloured LEDs on the device show the current modeOn/off button on the underside of the elementCapable of wireless infrared communication with an external wall controller which is sold separately - the Terma TTIR or Terma DTIR can both be used for this2 hour dryer function - sets the heat higher for 2 hours after which it will return to its previous levelBuilt-in 'frost' protection to prevent freezing in cold weather and also protection against the element overheatingIPX5 rated - read more about IP ratings and why they're essential in our Bathroom Electrical Zones blog86mm length from the thread down22.5mm distance from the outer contour of the D to the centre of the tapping2 year guarantee