Self-selected pressure function in the standby state, press the [self-selected pressure] key, enter the self-selected pressure function, display "P-30" within 5 seconds, press the [+] key or [-] key, can be in the range of 0-99 minutes to increase or decrease the pressure time (each press to change the 1 minute), long-press and hold down the [+] key or [-] key, pressure time automatically incremental or decremental; set the pressure time or use the default pressure time, within 5 seconds, no pressure time, no pressure time, no pressure time. Long press and hold [+] key or [-] key, the holding time will be automatically incremented or decremented; after setting the holding time or using the default holding time, without any key operation within 5 seconds, it will immediately enter into the working state, and the display will cycle to show the running lights, and it will start to heat up and cook.