Access Phone System,1 Line,11-3/4 H
.Range -22 Degrees to 149 Degrees F, Requires Telephone Line, Includes Mounting Hardware Access Control Phone System, Color Silver, Stainless Steel, Number of Lines 1, Ringer Yes, Mounting Type Flush, Surface, Height 11 3/4 in, Width 9 3/4 in, Depth 3 1/2 in, Volume Control No, Power 16V AC, Voltage 16V AC, Output Rating 10A AC/7A DC @30V, Operating Temp.