Nikon SB-5000 Reference Manual page 120

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When using radio control
• As a basic guide, the effective distance between the master and remote
flash units is approx. 30 m (98 ft) or less. These ranges vary slightly
depending on ambient environment.
• Position the remote flash units facing the desired direction.
• Up to 18 remote flash units can be used together.
• Be sure to press the test firing button on the master flash unit attached
to a camera to test fire the remote flash units after setting up the
camera, WR-R10 and Speedlight.
• When radio control remote mode is set, the standby function is
canceled while communicating with the camera. Make sure that there
is sufficient battery power. When not communicating with the camera,
the standby function is automatically activated regardless of the standby
function setting in the setup menu (0B-24).
D
D-40
Less than approx.
30 m (98 ft)
Remote flash units
SB-5000 and
(SB-5000)
WR-R10 attached to
camera
Remote flash units
(SB-5000)
Less than approx.
30 m (98 ft)