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Studiohut Wireless Radio Slave Flash Remote Trigger (16 channel) complete with 4 Receivers

Product Description :
Low power consumption maintenance cost long battery life
LED indicators on both receiver and transmitter Test button on transmitter for test firing
Additional receivers can be used in multi-flash set-ups to trigger all lights wirelessly
Typical battery life of about 20000 usages
Maximum effective distance range of approximately 21 yards 20m