Are you searching for a useful wireless flash trigger? Yew, now what you are viewing is YONGNUO CTR-301P 4 channel wireless flash trigger transmitter receiver. This wireless flash trigger is made of high quality material, which is durable enough for long time use. This wireless flash trigger can trigger the flash light separately, because there is a very sensitive light sensor and it also can trigger the flash light with the CTR-301P transmitter together. You can use this wireless remote flash trigger to trigger the studio strobe flash light via the PC cable. The canon wireless flash trigger has 4 frequency channels. The 1/4 stand tripod screw hole on this trigger can be mounted into the tripod, ballhead and so on. And this trigger can be widely used and it is compatible with different kind of cameras, such as Canon, Nikon, Panasonic, etc. It will bring much convenience to your life. With this wireless flash trigger, you will fully enjoy your photography, so take it at home now.