This is a Honeywell GSMV4G. Today we will be locating your MAC and MAC CRC. These are the serial numbers you will want to locate when you are activating your alarm monitoring services. These numbers can be located on the manufacturer box which your wireless cellular communicator came in or inside the device as shown above. It is always recommend that you get these numbers from the inside of the actual device itself to make sure you are getting the most accurate information. For assistance activating your GSMV4G wireless cellular communicator contact GEOARM at 1-877-443-6276.