Water Tight Ringdown Telephone, Overall Depth 5 1/2 in, Speakerphone Yes, Overall Height 10 3/4 in, Overall Width 9 1/2 in, Volume Control Yes, Indoor/Outdoor Usage Indoor, Outdoor, Standards FCC Part 15 Class A, IEC 61000-6-2:2005, Industry Canada ICES-003 Class A, Number of Lines 1, Mounting Location Wall, Enclosure Material Plastic, Includes Enclosure Yes, Maximum Operating Temperature 140 Degrees F, Minimum Operating Temperature -22 Degrees F, Color Black, Network Interface 10/100 mbps