This connection cable I bought the RF-602 Yongnuos on my Olympus OMD EM-5 to connect and operate as a remote shutter release. The receiver is connected with the cable to the camera and the transmitter has a button is used as a wireless shutter release. It works fine! (For the Olympus E-5 (and the series E-3, etc.), there is another connection cable that YONGNUO LS O21 / O2)