Honeywell P4-Premium Portable Wireless Doorbell / Door Chime and Push Button

Honeywell RCWL330A1000/N P4-Premium Portable Wireless Doorbell / Door Chime and Push Button. 

• Wireless – Battery operated
• Works with up to six (6) push catches, movement identifiers or entryway contacts for included security and convenience
• Six (6) ring tunes, completely customizable volume and six (6) visual caution icons
• Self learning code framework naturally changes with kill interference
• 450-ft working range