Hazardous Area Telephone, Call Waiting No, Overall Depth 4 in, Speakerphone No, Overall Height 12 in, Voicemail No, Overall Width 9 3/4 in, Volume Control Yes, Indoor/Outdoor Usage Outdoor, Standards cULus 20140826-E357080, FCC Part 15 Class A, IEC 61000-6-2:2005, Industry Canada ICES-003 Class A, Number of Handsets 1, Number of Lines 1, Mounting Location Wall, Caller ID No, Enclosure Material Stainless Steel, Enclosure Rating NEMA 3R, Includes Enclosure Yes, Facility Type Commercial