ProMaster FL1 Pro (Canon) User Manual

26 | Slave Flash Setup / PC Sync Terminal

(3) When taking pictures outdoors or under bright ambient light, the sensitivity of the sensors may be 

reduced. 

(4) To avoid interference between flash units, using more than three flashes in a group is not 

recommended.

(5) Avoid aiming the flash  directly into the camera lens.

The ProMaster FL1 can be used with cameras without a hot shoe. Some cameras have an x-terminal 

to allow flash synchronization. You can connect this flash’s PC Sync Terminal to the camera’s 

x-terminal using a sync cord to enable the camera to trigger this flash.