Feature: 1. 【2.4G Wireless Trigger】Experience non-directional, 100m long-distance, anti-interference capabilities with this wireless trigger system. The integrated transmitter and receiver offer 16 independent channels for seamless operation. 2. 【Wired and Wireless Shutter Functions】In TRX mode, the 603 can be connected to the camera via a shutter cable for wired shutter control. For wireless operation, one 603 unit can be linked to the camera via a shutter cable while another 603 unit is handheld. 3. 【Seamless Flash Triggering】Effortlessly trigger Yongnuo YN560 series flashes in 1-to-1 or 1-to-multiple configurations in TRX mode on the same channel. For other flash brands, mount the 603 on the camera hot shoe and connect the flash for wireless flash triggering, or use a studio light sync cord for additional compatibility. 4. 【Advanced Multi-Camera Flash Triggering】Elevate your photography with wireless remote control and synchronized flash triggering for multi-camera multi-angle shots. Link multiple cameras to the 603 in TRX mode via shutter cables for simultaneous shooting, with the 603 or one camera acting as the master controller. 5. 【Diverse More Possibilities】Unlock a world of creative opportunities with multi-camera multi-flash synchronization. Connect cameras to the 603 via shutter cables to trigger Yongnuo YN560 series flashes or other flash brands on the same channel, enabling synchronized flash triggering and diverse shooting styles. Specification: Features: 【2.4G Wireless Trigger】Experience non-directional, 100m long-distance, anti-interference capabilities with this wireless trigger system. The integrated transmitter and receiver offer 16 independent channels for seamless operation. 【Wired and Wireless Shutter Functions】In TRX mode, the 603 can be connected to the camera via a shutter cable for wired shutter control. For wireless operation, one 603 unit can be linked to the camera via a shutter cable while another 603 unit is handheld. 【Seamless Flash Triggering】Effortlessly trigger Yongnuo YN560 series flashes in 1-to-1 or 1-to-multiple configurations in TRX mode on the same channel. For other flash brands, mount the 603 on the camera hot shoe and connect the flash for wireless flash triggering, or use a studio light sync cord for additional compatibility. 【Advanced Multi-Camera Flash Triggering】Elevate your photography with wireless remote control and synchronized flash triggering for multi-camera multi-angle shots. Link multiple cameras to the 603 in TRX mode via shutter cables for simultaneous shooting, with the 603 or one camera acting as the master controller. 【Diverse More Possibilities】Unlock a world of creative opportunities with multi-camera multi-flash synchronization. Connect cameras to the 603 via shutter cables to trigger Yongnuo YN560 series flashes or other flash brands on the same channel, enabling synchronized flash triggering and diverse shooting styles. Specifications: Wireless Type: FSK 2.4G Transmission Range: 100M Channel: 16 Shutter Interface: 2.5mm Max. Synchronous Speed: 1/320s Power Supply: 2 * AAA(3V) Batteries(not included) Packing List: 2 * Flash Triggers 1 * Shutter Cable(S2) Package List: 2 * Flash Triggers 1 * Shutter Cable(S2)