Mount the Canon ST-E10 Speedlite Transmitter for EOS cameras on compatible cameras to control up to 15 Speedlites remotely. This compact unit offers an economical way to synchronize and activate multiple units for creative lighting, taking your photography to the next level. With the same level of weather protection as the latest Speedlite flash units, the transmitter is durable and rugged enough to tackle even the most demanding tasks. Press the MENU button on the transmitter to display the Speedlite settings menu on the camera’s LCD screen, allowing you to quickly and easily configure and adjust lighting. For even more control and creativity, use Canon’s Camera Connect app to control the transmitter remotely when you are unable to view the camera menu. The transmitter has Canon cameras with a multifunction shoe that supports automatic E-TTL flash.