Thanks for your purchase of this X2T-S wireless flash trigger. This wireless flash trigger is suitable for Sony cameras to control flashes with X system(e.g. camera flash, outdoor flash, and studio flash). It can also control Sony speedlites with the coordination of X1R-S receiver. Featuring multi-channel triggering, stable signal transmission, and sensitive reaction, it gives photographers unparalleled flexibility and control over their strobist setups. The flash trigger applies to hotshoe-mounted Sony series cameras, as well as the camera which have PC sync sockets. With X2T-S wireless flash trigger, high speed synchronization is available for most camera flashes in the market which support TTL. The max. flash synchronization speed is up to 1/8000s. Features: TheX2T-S TTL wireless flash trigger can work with camera flashes, outdoor flashes, and studio flashes with built-in X wireless radio system. It achieves stable, reliable and effective real-time signal transmission which makes it a good choice for photographers who have various lighting demands. User-friendly design. LCD with clear display effect; With 5 group setting butons and 3 function buttons to realize quick setting. All the groups and function buttons feature backlighting, easy to be operated even in low light environment. BT Support: Using your smartphone or tablets (adopt for iOs or for Android-based system) to connect the X2T-S via. BT after downloading the "GodoxPhoto" APP, you can control the flash mode, power output, the modeling light mode, the beep of flashes, and so on. With quick lock hot-shoe; The minimum power output can be precisely set to 1/256 in 1/10 step adjustment. With 5 groups, 32 channels and access to 99 wireless ID settings to limit the interference from other nearby systems. (Reminder: Only when the wireless ID and channel of the master flash and slave flash are same, can they be triggered.) Fully support TTL autoflash, 1/8000s high-speed sync, multiflash mode, manual mode, flash exposure compensation, adjusting the lighting parameter through the mobile APP, scan setting, one-shot and multi-shot setting, control of the modeling lamp, adjusting all groups' output value simultaneously, etc. The newly added scan setting function can help automatically detect the channel with the least interference. Support firmware upgrade via. Type-C USB cable, wirelessly triggering by 3.5mm sync cord jack. Specifications: Model: X2T-S Compatible Cameras: For Sony cameras(TTL autoflash); Work with cameras with PC sync socket Compatible Mobile Phone: For iPhone, for Huawei, for Samsung (Please refer to the compatibility list on the manual to know more about the compatible models.) Power Supply: 2 * AA battery (battery is not included) TTL Autoflash: TTL Flash Exposure Compensation: 3 stops in 1/3 stop increments Wireless Shutter Release: The receiver can control the camera shooting via. 3.5mm sync cord jack Zoom Setting: Adjust the focal length of the flash through the transmitter Firmware Upgrade: Support program firmware upgrade via. Type-C USB cable Memory Function: As long as 2 seconds after setting parameters, the parameters will be remembered, and the data will be recovered once restart Wireless Transmission Range (approx.): 0-100m Built-in Wireless System: 2.4G wireless transmission Modulation Mode: MSK Channels: 32 Wireless ID: 01-99 Groups: 5 Display: Large LCD panel, backlighting ON or OFF Item Size: 7.2 * 7 * 5.8cm / 2.83 * 2.76 * 2.28inch Item Weight: 90g / 3.2oz Package Size: 10.8 * 10.5 * 7cm / 4.3 * 4.1 * 2.8inch Package Weight: 180g / 6.3oz Package List: 1 * X2T-S TTL Wireless Flash Trigger 1 * User Manual (English & Chinese) Note: Batteries are not included. 1/8000s is achievable when the camera has a max. camera shutter speed of 1/8000s.