Package Includes: Wireless Camera Flash Trigger & Remote Control Kit (1 Transmitter, 2 Receivers), shutter cable for Canon (replaces RS-60E3), studio light cable x2pcs, 3.5mm-6.3mm adapter x2pcs, 23A battery x1pc, AAA battery x4pcs. | 16 Channels, operation range up to 100 feet (30m), max sync speed of 1/250s, 433MHz frequency. | Use as an individual or group wireless flash trigger, and/or as a shutter release remote trigger. | The wireless flash trigger is compatible with all flashes with STANDARD HOT SHOE, such as Canon 580EX II, 580EX, 540EZ, 520EZ, 430EX II, 430EX, 430EZ, 420EX ,420EZ, 380EX, Nikon SB-900, SB-800, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24, SB-700, etc | Since the flash trigger kit does not transmit TTL settings, use of a flash or light unit with full manual control is recommended.