for Impact PowerSynch users
Impact is the house brand name for B&H products. There was no mention about any automatic shut off on the units, either in their specifications or in reviews written about the units from purchasers. I guess then that they do not shut off by themselves.
|_F0A5334-Edit_small by Dester Wallaboo|
from Open Air Fashion Photography
|Old Harry's Rocks by John93Robertson|
from View from the top - Sea