Honeywell 3GL - AT&T Cellular Communicator for the L5200, L5210 & L7000 Videos
Honeywell 3GL & GSMVLP5-4G: Installing in the L5200
The GSMVLP5-4G is the unit that goes into Honeywell's wireless security systems in order for them to communicate via 4g cellular networks. It will work in either the L5100 or the L5200 (which is the newer Honeywell system). For the L7000 the 4GL communicator is necessary to have the system communicate over the AT&T 4G network.