Eyez-On Envisalink IP Security Interface Module For DSC and Honeywell Ademco Security Systems STAY CONNECTED: EnvisaLink 4 will allow you to receive text and email messages as well as control your Honeywell Vista and DSC security systems through the internet SMARTPHONE COMPATIBLE: The EnvisaLink 4 also provides access through a virtual keypad using an iPhone Android or Blackberry EASY SETUP: EnvisaLink 4 automatically seeks an IP address no router programming required BROWSER AND VOIP FRIENDLY: It allows you to view the status of and even control your alarm panel through a standard web-browser or smart-phone VOIP Friendly PANEL COMPATIBILITY: Honeywell Vista Panels Vista20P 21iP 15P 10P 128 and 250 DSC PowerSeries 1555 1555 MX 1575 5010 832 5020 864 1616 1832 1864