I recently acquired a Bowens 800E for use with my large format camera, but I also want to use it with my dSLR. I have a yongnuo PT-04TM wireless trigger, but it won't trigger the 800E. I've tested with a mechanical trigger and it works. I wonder if there is some capacitance in the circuit and the yongnuo doesn't close the connection for long enough to trigger it. Has anyone else tried a yongnuo trigger with an 800E? Perhaps there is a different yongnuo model that will work with it?