工作电压 Working Voltage：5V
显示模式 Display Mode: 9999Kpa
设置 Settings:
打开后盖Open Back Cover,
两个按键同时按，进入菜单，Press Two Buttons Together，Enter the Menu,
按K1按键，选定菜单，Press K1, Select Option
按K2按键，调整参数，Press K2, Adjust the Settings.
参数说明 Settings
1. dP: 小数位数Decimal Places
2.SLL：压力传感器量程下限,通常为0 Lower Limit of the Pressure Sensor, Usually it is 0000
3.SLH: 压力传感器量程上限，Hihger Limit of the Pressure Sensor,
如果是1Mpa,那么需要设置为1000（kpa）
If it is 1Mpa, then need to set to 1000(kpa)
4-6参数无效
4-6 Settings are invalid.