Please do not purchase the chime from the ".NEW version 1 pack" listing as this chime is not coming directly from Newhouse Hardware. TWO SOUNDS: Classic two-note Ding Dong" sound for the front door button and has an additional connection with a separate "Dong" for the rear or side door DIMENSIONS: Cover: 7-1/4" W x 4-1/8" L Base: 7" W x 3-7/8" L Overall Depth: 2" COMPATIBILITY: Use with a 16-volt/10 VA or 16-volt/15 VA transformer (not included) when connecting to a regular doorbell. Search 16TR" or "3TRAN" for a compatible transformer. INCLUDES: Door Chime and mounting screws (found inside the chime cover)..PLEASE NOTE: This item does not include the doorbell button or the transformer. Search CKIT1" for a door chime, transformer and door button set.PLEASE NOTE: If you would like to hear the sounds of the chime, please see the video that is with the images on the left hand side of this item page., Weight: 0.88 pounds, Manufacturer: Adamax