IQ America Step-Up Battery Operated Wireless Door Chime Wireless, battery operated door chime. Includes 1 chime box and 1 push button. Chime melodies include Westminster 8-note, 2-note, and 1-note. Different melodies can be selected for front or back door and volume is adjustable. An extra push button can easily added, sold separately. Features self-programming to ensure no interaction from neighboring systems. Chime box requires 3 C batteries not included, and push button requires 1 CR2032 lithium battery included. 6 inches wide x 7.5 inches high x 1 inch deep. Weighs 0.92 pounds. 5 year warranty. Style Battery Operated, Range 200 Ft., Batteries Required 3 C 1 CR2032 Batteries, Color Off-White, Pkg Qty 1, Package Type Clamshell