ZyXEL P-870M. Dimensions (WxDxH): 189 x 132 x 40 mm. LED indicators: Status. Networking features: Ethernet 10/100 Mbps. Power requirements: 9 V AC 1000 mA. Operating relative humidity range: 20 - 85 %, Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -20 - 60 °C