Never guess who s at your door from anywhere in the world. Doorbird has developed a high end and phenomenal looking doorbell intercom system thats been Rated Number 1 by Professional Integrators. See, talk and open your door all from your phone. • Multi Tenant individual functionality with intercom, door bell, access control, and Full App Functionality. Works great for gates or doors that have lock strike integrations. Comes ready to open and close gates with a push of a button on the IOS or Android app or with the RFID Card Reader. • Designed and Manufactured in Germany and made to work as a standalone unit or an accessory to your Control4, Crestron, Savant, URC control system or in conjunction with IP Video Recorder (NVR) and other smart home Systems like Homeseer or Vera. • Unit comes with retrofit or pre-construction back box to be Flush-Mounted. Also comes with RJ45 for LAN/POE Connectors. Not included 2 wire POE adaptor can be used with current doorbell wires as an alternative to running a hard wire that provides data and power to the unit. Recommended if you don t plan on running a CAT5/6 to door station. • Unit is 5.16 inches wide and 9.96 inch long and recommended to be mounted at least 49 inches high. The unit may also be surface mounted with a back box that is sold separately. The unit will function in harsh weather temperature ranging from -13 to 131 Fahrenheit.