SMC Networks HRZD020-WS-WS Operation Manual page 57

4.
Touch the [YES] key.
The "SERIAL" mode is established, instead of
"LOCAL", and the "Main screen" is displayed
accordingly.
HRZD Series
[Tips]
With the touch of the [NO] key, the screen is switched to the "Mode Selection
screen" where the name of "SERIAL" is flashing.
HRX-OM-M005
Chapter 5 Product Operation
Figure 5-19 "MESSAGE Screen"
5.3 Operation Screen
5-13