1、2 in 1 Flash Trigger and Timer: FSK standard 2.4GHz wireless system is used to more effectively ensure the speed, distance and stability. Remote control distance can be up to 100 meters in an open environment. 2、Integrated Transceiver: Can be set to transmit state (TX) or receive state (RX) through the switch, that is, you can use two or more transceivers to control multiple cameras and flashes at the same time. 3、Power Switch: Can switch between timer and flash trigger modes at the same time, and there is switch to switch between transmit and receive modes (common to timer and flash trigger), supporting maximum of 32 channels to avoid interference. 4、Synchronization Speed: Flash synchronization speed can be up to 1/250 second. Different types of flashes and cameras have different synchronization speeds. Buy camera specific transceiver according to your own needs. 5、Using Two Stage Button Design: In the TX state, the functions of wake up, test trigger, focus, and shutter can be realized respectively. It supports the wake up of the flash and triggers synchronously, and the PC line can trigger the studio light synchronously with the studio light. The connecting line can realize wired or wireless shutter remote control function. Item Type: Flash Trigger Material: ABS Color: As Pictures Shown Weight: Approx.156g/5.5oz Channels: 32 Channels Shutter Trigger Button: Half Press, Full Press Half-press Shutter: Blue Light On Press Shutter Fully: Red Light On Shutter Interface: 2.5mm Interface Maximum Sync Speed: 1/250s Group: A, B, C Three Groups Working Environment: Land Type: FSK 2.4GHz Wireless Remote Control System Transmission Distance: 100m/328.1ft (Open Area) Use Battery: AAA Batteryx2 (3V) (Battery Not Included) Studio Light Flash Interface: Standard PC Interface and 2.5mm Series Studio Light Flash Interface Compatible Camera Models: For EOS 7D, 6D, 5Dseries, 1Dseries, 50D, 40D, 30D, 20D, 10D, for PowerShot G10, G11, G12, G1X, 700D, 70D, 100D, for EOS 1100D, 1000D, 650D, 600D, 550D, 500D, 450D, 400D, 350D, 300D, 60D series, etc. 1 x Flash Trigger 1 x Manual