Nikon D500 Professional Technical Manual page 52

Synchronized Release
Synchronized Release Wireless Signal Range
Range varies with weather conditions and wireless signal
strength and may drop in crowds, in the presence of other
wireless signal sources, or if the remote camera is close to
the ground. Be sure the firmware for the WR-1 or WR-R10 has
been updated to the latest version; for more information, visit
the Nikon website for your area.
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