Funkwerk IP50 VoIP Phone. Weight: 839 g, Dimensions (WxDxH): 176 x 198 x 60 mm. Operating temperature range (T-T): 5 - 55 °C. Power requirements: AC/DC input 230V, output 9V. Safety: HTTP 1.1 basic/digest authentication for Web setup, MD5 for SIP authentication (RFC2069/ RFC 2617)