Support the flashgun wake-up function; you’ll never miss any shot opportunity. (Wake up can only used in TTL Compatible flash) Supports to control multiple flashguns and studio lights at same time. NOTE: Compatible with other brands flash (Wake up can only used in TTL Compatible flash). Nissin Di622 and Di866 can only support M mode. RF-602 is using FSK 2.4GHz wireless frequency. When using the RF-602 reserved to ‘Canon’ or ‘Nikon’ to control the flash light, the flash sync speed is up to l/250s, and 100 meters. 1.Wireless flash controller: Transmitter compatible with the device under flash control mode: Canon EOS: 1D series, 5D series, 7D, 60D, 50D, 40D. 30D, 20D, 10D, 550D, 500D, 450D, 400D, 350D,1000D, Rebel T2i,T1i,XSi,XS,Xti,Xt, Powershoe G10, G11, G12. Receiver compatible with the device under flash control mode: Canon Speedlite: 580EX II, 580EX, 430EX II, 430EX, 270EX, 220EX.550EX, Nikon: SB-900, SB-800, SB-600,(This item is not compatible with SB-400). Package include: 1 x Flash Transmitter 1 x User’s ManualPlease note: 1> niceeshop(TM) is a registered trademark and the only authorized seller of niceeshop branded products. 2> niceeshop provide you various kinds of great products at the lowest possible prices, welcome to our store and get what you want !!! 3> niceeshop highly appriciate all customers’ opinions to improve the selling ,also if anything you unsatisfied, pls contact our customer service department for probable best solution.