The Honeywell K14139 is a 6V @ 3.1AH sealed lead acid alarm battery that powers the Honeywell AlarmNet Dual-Path Alarm Communicator (iGSMV), Honeywell AlarmNet Dual-Path Alarm Communicator (iGSMV4G), Honeywell AlarmNet Dual-Path Alarm Communicator (7845i-GSM) and the Honeywell AlarmNet Wireless Cellular 2G GSM Alarm Communicator (7845GSMR). If you have received a low battery signal from your AlarmNet alarm communicator, this is the correct replacement battery.