RFS 2 module (radio frequency system) 
For RFS 2 flash control, the channel (studio address) must correspond to the transmitter’s channel. The studio address is set in the menu at position "st". The lamp channel is defined in the menu under "lamp". 

With the radio transceiver, you can define and set the individual lamps as you wish. To learn how to do this, please see the operating instructions for the transceiver. The transceiver is not included with individual heads as standard.

Photocell (cell)
The photocell can be switched on and off using the menu function “sync”. When it is active, the blue LED beside the "cell" label is illuminated. After the first flash of a sequence, the active photocell is deactivated, and the blue LED beside the "sync" key blinks. Pressing the "test" key switches it on again. 

Sync socket
The sync cables, 5 m (16.4 ft) (Art. No. 34.111.00) and 10 m (32.8 ft) (34.112.00), can be fitted to the socket for cable release. 

"test" key  
Using this key, the monolight can be triggered manually. The flash can be triggered as soon as 70 % of the set energy level is reached. The visual "Ready" indicator, on the other hand, only illuminates when 100 % is attained.