GBF WiFi Doorbell Intercom for Multi-Unit Apartment Building (2 Units), Remote Access by Android and iOS Device Answer and view callers at your door remotely via your mobile iOS or Android device, whether you are at home or abroad. The IP wireless video doorbell sends a push-notification and directly connects with your smart mobile devices. Easy setup, connects to your smart device in minutes. WiFi or Wired Ethernet connection. No 'Cloud' subscription or usage fees (cell phone carrier data plan fees would still apply) 2-way live video and audio monitoring can be initiated from your mobile device, even without pressing the bell button at the door station. Record Live Video and Snapshots directly to your smart device for archiving. Multiple clients (smart devices) can be connected to a single IP Doorbell, Multiple doorbells can be accessed together through our free ControlCam2 APP. The included GBF Indoor Chime can be plugged in to any standard power outlet to get an additional audible alert addressed to each apartment unit. Integrated SPST relay provides two normally-open contacts to trigger a remote door lock or gate, which can be activated directly from your mobile device. Integrated 640P camera offers a 90 degree wide viewing angle with no optical distortion, ideal for viewing details at longer distances. Subject illumination LED's allow for COLOR video in low light. An Installer friendly intercom system as only the outdoor station and each Skybox are connected with four conductor wire (3 ft wire included with each Skybox). Skyboxes can share the same internet access and therefore can be co-located near the outdoor station. Wiring inside to each apartment unit is not necessary. Premium Brushed Aluminum faceplate for durability. Weatherproof IP55 rated construction. 2-year manufacturers warranty.