H720 series is with two module two sim cards ( two sim working online) : two sim work together to backup ( hot standby for failure backup, switch to backup line immediately if main line is failed) ; ....
Shenzhen E-lins Technology Co., Limited Belonged to E-Lins Group, E-Lins Technology was established in 1999. As a professional wireless M2M solution provider, E-Lins is the leading provider and OEM/ ....
Built-in 2G/ 3G/ 4G industrial cellular module, insert SIM/ UIM card to work directly; Built-in sim card slot; Broadband M2M communications SIM failover/ standby APN 2G/ 3G/ 4G failover for....