Juying Electronics provides relay control (DO) + analog acquisition (AI) + switch acquisition (DI) + analog output (AO), multi-channel hybrid module, standard Modbus protocol, support Modbus RTU/ASCII, support point / linkage intelligent control, provide supporting software, support secondary development, RS232/RS485/4G/USB/RJ45/ network port / WiFi/GPRS/Lora multiple communication modes are optional.