SMDV B Control TTL for Canon: All-in-one Wireless Controller The Canon SMDV B Control TTL is a comprehensive wireless controller specially designed for synchronizing the SMDV B500 TTL studio flash unit with your camera. It comes equipped with a clear LCD screen making it user-friendly. This device helps you manage up to 4 different groups of B500 flashes and 80 channels in total. Its reach extends to approximately 70 meters, giving you a wide range of control. One of the key features of the SMDV B Control TTL is its support for TTL (Through-The-Lens metering) and High-speed synchronization, capable of syncing flash up to a rapid-fire 1/8000 of a second. Operating on a 2.4GHz frequency, the wireless connection remains clear and uninterrupted. Please note, the device requires two AAA batteries, which are not included in the package. Main Features of the SMDV B Control TTL for Canon Cameras Wireless transmitter for the SMDV B500 studio flash unit Capacity to coordinate 4 groups of flashes and 80 channels Operational range up to 70 meters Support for TTL metering Offers High-speed sync up to 1/8000 seconds User-friendly interface featuring a clear LCD screen Operates at a 2.4GHz frequency for secure connection Runs on 2 AAA batteries (not included) Compatible with Canon cameras The SMDV B Control TTL for Canon comes standard with a two-year warranty, ensuring you of its quality and reliability.