The Four-Faith RTU product is a device to collect data from PLC, sensors, transducer, meters, etc. through its analog input, switch input, switch output, or serial ports. Provide pulse counting and wireless data communication So that it is suitable for wireless data acquisition, transmission & monitoring data remote control, and wireless data transmission. Four-Faith RTU products including 3G/4G RTU, SCADA RTU, and PLC RTU.