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Retra UTrigger Remote Shutter Release for Canon E3

SKU # ret.utrig.can.E3


Retra UTrigger Remote Shutter Release for Canon With E3 Connector

The Retra UTrigger has all of the same features and specifications as the Retra UTrigger Plus, with the exception that the Retra UTrigger Plus has a 3-stage battery indicator, the Utrigger does not.

The receiver, mounted inside the housing, is connected to the camera.  The camera can be remotely triggered by connecting the transmitter on the outside to communicate wirelessly through the housing.  Signal betweeen the transmitter and the sensor can travel through up to 20 mm of Aluminium.

How do I focus?

The uTrigger uses a one stage triggering method which works with manual and autofocus settings.

  • With the camera in autofocus mode and the focus priority turned on, the camera will start to focus when the button is pressed.
  • Once the camera is in focus it will be triggered automatically
  • In manual focus mode, the camera is triggered when the button is pressed

Will it fit my housing?

The uTrigger only needs two small surfaces on the inside and outside the housing where you can mount the sensor bucket and transmitter button. Both surfaces measure less than 15mm in diameter.

Bulb and lock

The uTrigger is equipped with bulb and lock functions which allow the photographer to make long exposures.  When not in use the uTrigger can be locked to avoid accidental triggers and using the battery.


The uTrigger can be connected at any time during the dive thanks to it's short range wireless technology. When not connected the uTrigger can be mounted to your BCD via the mounting rope.

  • you don't need to buy a new device when you change your camera or housing
  • it can operate for more than 4000 triggers and up to 3000 seconds of bulb time on a single battery
  • it features a bulb and lock option for long exposures and to avoid accidental triggers
  • it works in manual and autofocus mode


  • aluminim anodized housing
  • Weight: 500 g /  1 pound
  • body length: 185 mm
  • depth rating: -50 m (tested at 6 bar)
  • cable length: 15 ft (4 m)
  • integrated bulb/lock function
  • operating voltage: 2 x 9 V battery

Kit contents:

  • uTrigger
  • Slim connector
  • 2 x Duracell 9V battery
  • 4 x rubber bands
  • Additional bolt
  • Additional stickers
  • 2 x O-ring seal
  • Additional mounting buttons