DIMENSIONS: Cover: 9” W x 5” L Base: 7-1/8” W x 4-5/8” L 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. QUALITY: Doorbell chime maintains a smooth white modern finish and vented cover to allow the sound to carry better. Easy to install to your doorbell button and doorbell transformer. 2 year limited . PLEASE NOTE: This item does not include the doorbell button or the transformer. Search “CKIT2” 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..TROUBLESHOOTING: Issues with the chime MAY NOT be with the chime itself. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Manufacturer: Newhouse Hardware