This model is a 4.3-inch high-definition highlight of MASS series, with 16.7m display color, 1GHz clock speed, 256MB memory and 128MB memory. It is equipped with dual serial ports and supports 1 RS485. The power supply voltage is DC10.8V ~ 28V, the opening size is 119*93(mm), the working environment temperature is 0~50 °, and the storage environment temperature is-20~60 °.