Led Displays On The Flash Unit; Flash Readiness Indication; Correct Exposure Indication - Metz mecablitz M400 Mode D'emploi

Setting the automatic unit switch-off
STANDBY
OPT.
k
ON
STANDBY
OPT.
°
°

4 LED displays on the flash unit

4.1 Flash readiness indication

4.2 Correct exposure indication

OK
AUTO
TTL