The TL880LE / TL880LT LTE/ Internet Dual-Path Alarm Communicator ensures reliable primary or back up alarm communication of the phone line for your home or business. When connected to a DSC HS2016/ HS2032/ HS2064 or HS2128 control panel, alarm reporting paths can be combined through the Public Switched Telephone Network (PSTN). Plus the LTE cellular network and/or Internet for maximum redundancy.