Nikon Autofocus Speedlight SB-27 Instruction Manual page 78

Optional accessories
TTL Flash Unit Coupler AS-17 for F3-Series cameras
Dedicated adapter for F3-Series cameras providing TTL flash
operation with Nikon Speedlights such as SB-27 and SB-28
featuring ISO-type mounting foot (not designed for F3).
DC Unit SD-7
An external power source that increases the number of flash
firings, and provides faster recycling time. The SD-7 uses six
C-type alkaline-manganese batteries or six C-type NiCd batteries.
DC Unit SD-8/8A
A compact and lightweight external power source that increases
the number of flash firings and provides faster recycling time.
The SD-8/8A uses six AA-type alkaline-manganese batteries or six
AA-type NiCd batteries.
Modulate Remote Control Set ML-2
The ML-2 consists of a receiver and transmitter set that enables
automatic remote control using modulated light for multiple flash
operation with more than two flash units.
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