Promaster SM300 Manual 

Monolight is designed for the casual photographer looking for a reliable, economical studio lighting solution. Standard features include color-temperature corrected circular flash tube (5600k), ProMaster/Bowens style reflector providing large lighting coverage, even l ...

with this function. To use the RF trigger mode, be sure that optical slave mode is off (see #8 above). Set the desired channel on the light using the Wireless Channel Selector switch. Be sure that the switch on the trigger is set to the same posi ...