This versatile Hampton Bay Door Bell works in any home installation. For a Wired installation, you'll need a Wired Push Button and a 16 VAC/10 VA Low-Voltage Transformer. To use wirelessly, you'll need 3 "C" batteries and a Hampton Bay Wireless Push Button. Replacing your current basic Door Bell with a new stylish Door Bell is easy. Installation usually takes less than 30 minutes. Molded plastic cover Up to 150 ft. transmission range when used wirelessly 16 selectable tones to choose from (click the video to listen to each) Syncs with all Hampton Bay Brand and Heath Zenith Brand Push Button Decorative black frame doorbell cover with contrasting white insert Adjustable volume control 85 dB maximum loudness Door Chime Box Type: Wired or Wireless Multiple Songs: Yes Style: Decorative Mechanical Bell: No Bell Wire Required: Wireless Electrical Product Type: Door Chime Box Zone-specific Sounds: Yes Door Bell Or Intercom Type: Door Bells Buzzer Only: Yes Color Family: Multi-Colored Adjustable Volume: Yes Number of Sounds: 16 Westminster Bell: Yes Transformer: Not Included Digital Bell: Yes Certifications and Listings: FCC Listed Product Height (in.): 8.70 Product Depth (in.): 2.41 Product Width (in.): 6.00 Ship Width: 8 Ship Height: 10 Ship Length: 12