Specifications:

• The transmitter emits radio signal to the receiver when shutter is pressed, the receiver once picks up the signal, will trigger off the external flash unit
• This flash trigger unit has strong anti-interference function and has 16 channels for you to choose
• It is extremely useful if there are several photographers working nearby
• Only for the cameras with universal hot-shoe, MINOLTA and SONY can work with converter(not included)
• Compatible with: Nikon SB-900, SB-800, SB-600, SB-80DX, SB-28 SB-27, SB-26, SB-25, SB-24; Canon 580EX, 430EX, 580EXII, 430EX11, 420EX, 420EZ, 380EX, 540EZ, 520EZ, 430EZ; YIYAN CY-20, BY-28A BY-24ZP, CY-28A, BY-26AL, CY-32TWZ, BY-18, not for CY-28ZL, CY-26ZL; SUNPAK PZ42ZX, PZ40X, not for PF30X; EMOBLITZ D730AFC, D35AFC, D728AFC, D728AFN, D730AFN, D35AFN; SZ-1000  SG-300 SG-100; YN-460, YN-462, YN-465, YN-460 II, etc.
• Powered by: 2 x AAA batteries (not included)
• Channel: 16
• Outdoor Working Distance: Approx. 20~30m
• Indoor Working Distance: Approx. 20m
• Synchronizing Speed: 1/200 

User Guide:  

• Insert the transmitter to camera hot mount directly w/screw lock system. Turn on the camera and transmitter and set in same channel
• Attach the camera flashes to receiver hot mount (1) and (2)
• Place the umbrella shaft into the socket
• Press the camera shutter ready for instant using

Package Included: 

• 1 x Transmitter
• 1 x Receiver
• 1 x Cable
• 1 x User Manual