Promethean ActivBoard Wireless Upgrade. Interface: USB. Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -10 - 60 °C, Storage relative humidity range: 0 - 90 %. Colour of product: Black. Width: 34 mm, Depth: 110 mm, Height: 14 mm. Cables included: USB