Panel 7″ capacitive touchscreen - easier to see and use Resolution: 800 x 480 pixels One-touch arming - Arm button on home screen for one-touch arming Capacitive-touch buttons - Home, Emergency Dimensions: 8.9″ x 5.25″ x 1.25″ - thinnest 7″ all-in-one system on the market 5-day weather forecast. Firmware Updates Over-the-air - convenience of updating panel remotely to add new features and capabilities to the GC3 system USB - fast on-site updates to make sure the GC3 is up-to-date with the latest features Security 100 Wireless Zones - 40% more zones than GC2 to add more protection to a residence; no all-in-one panel has more wireless zones 2 Wired Zones 32 Keyfobs - 8x more keyfobs than GC2 4 Keypads 2 Open Collector Outputs Wired Bell Output - connect external siren 100 Users More zones than Lynx Touch or Vivint SkyControl Give users a name, not just a number Assign individual schedules Communication User-replaceable cell radio with integrated antenna Snap-in radio (sold separately) can be installed without opening the panel; requires no tools to install 3G - AT&T or Rogers Network CDMA - Verizon Network. Automation Integrated Z-Wave radio Supports up to 232 Z-Wave devices Lighting controls, light bulbs, door locks, thermostats Create and execute scenes. Third-hand strap - for those times when you need one more hand during installation Integrated level - to get it straight Easy-to-align center mark At-a-glance programming - see zone programming configurations on one screen Power 100-240VAC 50/60Hz 1.7A 14VDC adapter. The 2GIG GC3 Cellular Radio Module (sold separately) is a snap-in unit providing the GC3 Security & Automation System with communication to the Central Station for alarm signaling and delivering (Over-the-Air) OTA firmware updates to the GC3 Panel. It also provides connectivity to the Remote Service Provider and 2-way voice communication. The module also includes a built-in antenna to provide a consistently strong communication signal.