4G GSM Smart Controller RL2 Relay Power Switch Timer SMS App Remote Control Home Appliance 10A

4G GSM Smart Controller RL2 Relay Power Switch Timer SMS App Remote Control Home Appliance 10A. Description. RL2-WLTE-GC Version 4G controller with 2 relay outputs. The 4G frequency of GC version is globally applicable. It also supports power failure alarm function. The device should be installed with your local 4G SIM card. Then you can control the device On Off remotely by SMS, Call, PC web and App (WLTE Control). App and PC web communicate with the device via 4G data internet. SMS and call control is based on SMS Call network channel. Call control supports 20 authorized master numbers Max. With the 4G LTE network, you can install the device anywhere with 4G network coverage, perfectly solved the weakness of WIFI network distance limitation. App communicates with the device via 4G SIM data. It consumes just a little 4G SIM data. The data usage is about 5 to 20MB per month. Call control: supports 20 authorized master call numbers.