This 2.4GHz wireless trigger is replacement for Sony A77II, A7RII, A7R, A58, A99, ILCE600L camera. It can trigger TRIOPO 2.4GHz wireless camera flashes, studio flashes, outdoor flashes with Sony hot shoe. It has TTL, M and Multi modes, 4 groups and 16 available channels. Support up to 1/8000s HSS, front-curtain SYNC, rear-curtain SYNC, FEC, FE LOCK, and focusing assist & etc. Features: Replacement for Sony A77II, A7RII, A7R, A58, A99, ILCE600L camera. Built-in 2.4GHz wireless G transmission system, communication range can reach up to 50m. Can trigger TRIOPO 2.4GHz wireless camera flashes, studio flashes, outdoor flashes with Sony hot shoe. Available modes: TTL, M and Multi. 4 groups and 16 available channels; different groups with different power output for each flash light output. Support up to 1/8000s HSS, front curtain SYNC and rear curtain SYNC. Support exposure compensation(FEC), exposure locked(FE LOCK) and focusing assist(can be disable); Mixed flash mode; Auto save function. Big and clear LCD display for real-time monitor. Specifications: Model: G1-SN System Mode: 2.4GHz Wireless Transmitter Communication Distance: Up to 50m Input: Hot Shoe Camera Compatibility: Replacement for Sony A77II, A7RII, A7R, A58, A99, ILCE600L Flash Mode: M, TTL, Multi Group: A, B, C, D Channel: 16 Synchronous Model: Front-curtain SYNC, Rear-curtain SYNC, High speed SYNC SYNC Speed: Up to 1/8000s Focus Lamp: AF Assist Lamp Power: Powered by 2pcs AA Battery(Not included.) Stand-by Time: Up to 60h (based on 1.2V 2400mAh AA battery) Item Size: 6.4 * 7.8 * 3.2cm / 2.5 * 3.1 * 1" Item Weight: 93g / 3.3oz Package Size: 10.6 * 8.3 * 6.5cm / 4.2 * 3.2 * 2.6" Package Weight: 130g / 4.6oz Package List: 1 * Flash Trigger 1 * User Manual(English) Note: 1. This flash trigger can trigger TRIOPO 2.4GHz wireless camera flashes, studio flashes, outdoor flashes with Sony hot shoe only. 2. Battery is not included.