Nikon SB 20 User Manual

Page 83

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Power source

Power switch

Four 1.5V AA-type alkaline-

manganese or NiCd batteries:

optional Battery Pack SD-7

holding six C-type batteries is

available as an external
power source

Three positions are pro
vided—OFF, STBY (for
standby) and ON; at STBY

position with the Nikon F-501/
N2020, F-401/N4004, F-301/

N2000, FA, FE2 or FG, SB-20

turns off automatically when
flash unit is not used for one or

two minutes and turns on when

camera exposure meter is on