Jinbei Wireless USB Digital Flash Trigger TR-A4 for Jinbei Studio Flash

USB receiver, easy to use

The response speed is faster. It applies 12V 23A batteries and has dormancy mode to extend service life.

4 independent channels, effective responsive distance can reach 35 meter and may adapt to different shooting demands.

Channel set and use:
There are channel switches on both transmitter and receiver. The trigger can only work under same gears between the two parts. In the effective working range, 4 pairs of triggers (maximum number supported) may work together and do not disturb each other.