You have a call on your phone. It's not a regular phone call but a visitor call from your iseeBell. IseeBell Smart Video Doorbell connects to your Wi-Fi network and grants you the convenience of answering your door from your mobile devices and streaming live audio and video. No matter where you are, as long as you have Wi-Fi or cellular networks on your iPhone or iPad, you will be able to have a two-way communication right away with the visitor, or just take a peek of what's going on even if no one is in front of your door from iseeBell App. IseeBell, revolutionized doorbell, is your next doorbell. Features include: HD Camera-Motion detecting sensor-185 Ultra Wide-Angle Lens-Night Vision PIR Sensors-Cloud recording-Easy Installation/DIY-Weatherproof.