During installation, the nitrogen pressure preserve value of NetCol5000-C is ( ) The pressure preserve time is ( )

The report functions of NetEco has a variety of presentation forms, including visualization of bar charts, pie charts, graphs, etc.

The following () characteristics are standard features of the NetCol 8000-C air conditioner.

If IP21 component is configured, top cable routing is not supported for UPS5000-E.

When the ECC800 detects that the connection signal to the device is interrupted, a communication interruption alarm is generated. What are the possible reasons? (Multiple choice)