Industrial design, stable and reliable, suitable for harsh environment; Support 4, 8 and 16 digital DO outputs, widely used; DO1 supports PWM high-speed pulse output, frequency: 10Hz ~ 300KHz; DO2 can be used to control the direction output of stepper motor and servo motor; 1 RS485 supports Modbus master and slave protocol for expanding IO or HMI; One RJ45 Ethernet interface supports TCP Server and TCP Client services; Support Modbus TCP and MQTT protocols, can access SCADA, MES and cloud platforms; As a TCP server, it can support 5 TCP links at the same time.