first TTL wireless flash trigger X1N is suitable for Nikon DSLR series cameras, as well as the cameras which have PC sync sockets. It can be used with a transmitter and one or more receivers for studio flash, speedlite, and camera shutter. Featuring multi-channel triggering, stable signal transmission, and sensitive reaction, it gives photographers unparalleled flexibility and control over this strobist setups. -- With X1N wireless flash trigger, high speed synchronization is available for most camera flashes in the market which support i-TTL. The max flash synchronization speed is up to 1/8000s 1/8000s is achievable when the camera has a max camera shutter speed of 1/8000s. Features: Built-in 2.4G Wireless Transmission: Built-in 2.4G wireless transmission provides 100meters further transmission distance, X1N can function as a remote studio trigger, a camera flash trigger and a camera shutter release. Compatible with i-TTL Auto Flash, Fully Supporting TTL Functions: Support for functions included i-TTL auto flash, manual flash, high-speed sync, flash exposure compensation, flash exposure lock, manual focus, modelling flash, etc. Wireless Remote Control and Grouping System: Wireless grouping system and 32 channels to have multiple flashes under control simultaneously. Big and Clear LCD Panel: Transmitter and receiver both have large and clear backlight LCD panel to offer great convenient operation. More Functions: Versatile functions, such as synchronization delay setting, wireless shutter release, zoom setting, etc. PC sync socket to input and output; receiver use 2.5mm sync cable to output. USB firmware upgrades helps keep pace with the latest technology. Useful memory function that settings will be stored 2 seconds after the last operation and recover after a restart.