Bought the Hahnel-trigger for the E-5. Unfortunately, the connector (round connector with 3 contacts) proved not fit, he was - though seemingly well of the processing - not optimal plug, also triggering did not work optimally. Maybe I have a "Monday device" caught. Nevertheless, I have the Hahnel returned and the original remote release of Olympus purchased Olympus RM-CB1 cable remote control. This fits perfectly. In addition, the original has a screw thread on the bottom to store the protective cap of the camera socket and is "Made in Japan". Unfortunately, the original cost at least two to three times the offered here Hähnel-timer.