Nissin Air R Instruction Manual page 4

Nissin Air R is designed for Nissin Air System (NAS)
2.4GHz radio receiving operation. No radio signal is generated from
NAS Air R.
Use with NAS receiver & Nissin digital flashes & Original flashes.
The Nissin commander attached to the camera is called master unit.
The flash unit attached to the Air R is called slave unit.
Once connecting to NAS Commander, all functions will be controlled through
NAS Commander.
Transmission distance, approx. 30m (98.4 ft.)
Metal/ Wire/ Wall/ another 2.4 GHz radio may reduce the NAS transmission
distance
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