ThisJJC Canon Trigger cable for PocketWizard (PW-A1)can be used to connect your PocketWizard FlexTT5 Transceiver to your professional digital SLR camera from Canon.The cable allows you to operate the camera remotely and prevents the camera from automatically turning itself off after a certain amount of time.If your camera is on, it responds much faster, but will use more power.To save the battery of your camera, it is possible to turn off the “pre-trigger” switch.