Allied Telesis Stacking Kit. Connectivity technology: Wired. Colour of product: White. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 80 °C, Operating relative humidity range: 5 - 80 %. Safety: UL 1950 (UL/cUL), EN60950 (TUV); EN60825 EMC FCC Class A, EN55022 Class A, EN55024, VCCI class A This is an auto-generated long summary based on the first three features of the first five feature groups.