Nikon Z 8 Reference Manual page 855

The SU-800 Wireless Speedlight Commander
When mounted on a CLS-compatible camera, the SU-800 can be used as a commander for SB‑5000,
SB‑910, SB‑900, SB‑800, SB‑700, SB‑600, SB‑500, or SB‑R200 flash units. Group flash control is
supported for up to three groups. The SU-800 itself is not equipped with a flash.
Stand-alone
Supported features
i‑TTL balanced fill-flash
i‑TTL
Standard i‑TTL fill-flash
Auto aperture
qA
A Non-TTL auto
GN Distance-priority manual
M Manual
RPT Repeating flash
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Compatible Flash Units