Telephone, Overall Depth 4 in, Overall Height 12 in, Overall Width 8 3/4 in, Volume Control Yes, Indoor/Outdoor Usage Outdoor, Standards CSA Certified, FCC TCB, Industry Canada 10124041A, Number of Handsets 1, Number of Lines 1, Cord Length 20 ft, Mounting Location Wall, Enclosure Material Steel, Enclosure Rating NEMA 3R, Includes Enclosure Yes, Facility Type Commercial, Includes Mounting Hardware Yes, Maximum Operating Temperature 140 Degrees F, Minimum Operating Temperature -40 Degrees F