S**2 is industrial 4G RTU that supports SMS and MQTT protocol. It is compatible with Huawei cloud, Alibaba cloud and other clould platform including customized cloud platform. It has one RS**5, eight DI, four Relay output, six AI and one temperature and humidity acquisition interface. It can be used as the Modbus master or slave to collect data from meters or extended IO. It has built-in programmable logic control and timer functions. It is widely used in various remote industrial data acquisition and control systems.
