HEH1018 Features: * Wired door chime buzzer * Material: Metal * Enclosed buzzer features a maximum of 90 decibels * Low voltage hardwired accessories Color/Finish: * Color: Silver Specifications: * Input / Output: 3-6 VDC / 8-16 VAC Assembly Instructions: * No assembly required Dimensions: * Dimensions: 3"" H x 2.63"" W x 1"" D Warranty: * 1 Year manufacturer"s warranty