User manual for NV-711, NV-711-Wac 10
2.4
Functional button «F»
The functional button «F» located on the bottom panel of the device is used for entering to a service
mode for the device update or resetting to the factory settings.
Attention! Inappropriate using of this button may cause the device malfunction. Before
using the F button, refer to the item 9.4 The procedure for recovering the factory settings