Features:

• 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.
• The special Radio Slave Camera Trigger has Highest responding time up to 1/1000s.
• This flash trigger unit has strong anti-interference function and has four channels for you to choose. It is extremely useful if there are several photographers working nearby.
• Wireless Flash Trigger with 4 channels selectable;
• Maximum effective area of the Flash Trigger: 30m (open area without interference);
• Radio working frequency with such 4 Channel Camera Wireless Flash Trigger Radio Control Slave Kit: 433MHz
• NOTE: This item Wireless Transmitter Receiver doesn't work properly with Canon 580EX and 430EX, it will fire the flash at random when using on the models.

Packaged inside:

• 1x Transmitter
• 1x Receiver
• 1x Sync Cord