Add this External Antenna Accessory to upgrade yourHoneywell Cellular Communicator or Honeywell Dual Path Communicator. GSM-EAA Honeywell AlarmNet External Antenna Accessory Product Description: The GSM-EAA external antenna accessory is required for installing an Alarmnet external antenna on an AlarmNet GSMX or GSMVLP cellular alarm communicator. This item replaces the onboard internal antenna of the GSMX or GSMVLP and allows you to connect either the GSM-ANT or one of the GSM-ANT3dB kits. GSM-EAA Honeywell AlarmNet External Antenna Accessory PDFs for Additional Information: Data Sheet for Honeywell AlarmNet GSM Antennas Guide for AlarmNet GSM Antennas Technical Document for AlarmNet GSM Antennas Quick Install Guide for AlarmNet GSM-EAA External Antenna Accessory