Hahnel modus 600rt - LCD Panel in Five Modes

GB
Modus 600RT 11
LCD Panel in Five Modes
(1) Attached to the Camera
(2) 2.4GHz Radio Control: As a Master Unit
(3) 2.4GHz Radio Control: As a Slave Unit Group A
Channel no. Optical only Slave mode Group A/B/C...
(b) Slave Unit