Amplified Phone Ringer, Material Plastic, Overall Depth 6 1/4 in, Overall Height 4 in, Overall Width 4 3/4 in, Compatible with Grainger Part Number Not Applicable, Compatible with Series Universal, Resistance Properties Not Applicable, Features Dual Modular Phone Jack, Color Black, Product Type Telephone Ring Signaler, For Use With Landline Service, Includes AC Power Adapter, Ring Signaler, Telephone Line Cord, Manufacturers Warranty Length 1 yr