Package includes: 2 waterproof buttons; 1 plugin chime/ receiver; double-sided tape (for install); screws and anchors (for install); battery for buttons; button brackets; instruction manual
Operating range: 600-1000 ft
Tones: 52 options available
Volume: 4 levels available (25 db to 110 db)
Installation: Double-sided tape or anchors and screws
Material: ABS Plastic
Batteries: A23 (included)
Type: Expandable