Nikon Z 7II User Manual page 598

Option
[PIN]
•
Regardless of the option selected for [Link mode], signals
from paired wireless remote controllers will always be
received by the WR-R10. Users of the WR-1 wireless remote
controller will need to select pairing as the WR-1 link mode.
D
The WR-R10 Wireless Remote Controller
Be sure the firmware for the WR-R10 has been updated to the latest
version (version 3.0 or later). For information on firmware updates, see the
Nikon website for your area.
Communication is shared
among all devices with the
same four-digit PIN.
Connect using a four-digit
PIN. Press 4 or 2 to
highlight digits and press
1 or 3 to change. Press J
to enter and display the selected PIN.
•
This option is a good choice for photography
featuring a large number of remote devices.
•
If there are multiple cameras present that share the
same PIN, the flash units will be under the sole
control of the camera that connects first, preventing
all other cameras from connecting (the LEDs on the
wireless remote controllers connected to the
affected cameras will blink).
Description
B The Setup Menu: Camera Setup
481