Doorphone Fanvil-i20-S, 2 SIP accounts, Compatible with standart SIP (RFC3261) protocol and main IPPBX/IMS platform, HD Voice (G.722), Access Control (by call, by code, IC/RFID), PoE 802,3af., High temperature range: -40°C to 70°C, RFID Card Number - 500, Protection Level - IP54.