SN7021 Cordless Audio Doorbell

Accessory device only--requires the VTech SN5127 or SN5147 to operate (sold separately)

Two-way audio lets you carry out conversations with visitors without opening your door, keeping you safe

Weather-resistant doorbell can withstand rain, snow, and hot or cold temperatures, so you can leave it outside all year long

Changeable chime with adjustable chime volume lets you set the volume according to your preferences

Customizable and pre-recordable emergency message lets you sound out a message in the event of an emergency

Wall-mountable design makes it easy to mount next to your door

System can expand up to a total of 3 doorbells to cover all of your home's entrances

Includes AC power adaptor