LF2400h-EW Light Head

LF2400h-EW Light Head. The rotary switch on the back end of the unit controls ON/OFF and power setting over between[FULL]/[LOW]. The "Selector Ring LF" (red ring switch) on the light head provides each 6 steps power setting for FULL and LOW making 12 steps power setting in total.
The maximum power is 2400 lumen at level 6 of FULL mode. The LOW mode is about -1.5EV of the FULL mode. Each click of the "Selector Ring LF" provides about 1.0EV increments (FULL) or about 0.9EV (LOW). The rotary switch is equipped with a lock ring to prevent accidental activation of the light.