Communications Interlink Module, Power Supply: 12 VDC, Current Draw: 150 MILAMP, Dimensions: 4-5/8 IN X 3 IN, Temperature Rating: 32 - 140 DEG F, Network Support: Standard, Encrypted, Reverse IP, CAN Bus: CAN Bus 1 - Server To ACU Communication, CAN Bus 2 - ACU To ACU Global Communication, Software: System 7.0.16, Vantage 8.1.15 Recommended, For Establishing Communication Link For Global Communication, All Standard CAT5 Cabling