1. The device is easy to use and can be used without modifying the parameters. 
2. The left two digits are the set pressure, the right two digits are the pressure gauge real-time pressure, the up and down keys modify the set pressure, and the inverter keeps the real-time pressure running around the set pressure. 
3. Built-in PID control and advanced energy-saving software. 
4. Has full water sleep, lack of water sleep, and wake up function.