Great set! Works for me flawlessly with all older flashes (Vivitar 283 and others), even outdoors at 25m. I tested with a Pentax K-50 and Olympus E-M10. The included camera release cable did not fit. For Pentax I needed a 3.5mm / 2.5mm adapter. Although this works the trigger, but to focus remotely was not possible. On the other hand has in the E-M10, to purchase a CL-UC1 cable of pixels, everything works just fine. In particular, the standard batteries and the switch should be mentioned. (In my JIANISI PT-04TM in the transmitter an exotic 12V 23A battery was necessary that always drew current lack off. Even at just 11Volt went nothing more. Therefore, the new purchase.) The processing of the set is perfectly fine. Only remains: 5 stars Weiss perhaps someone, whether one of the 2.4 GHz channels with the "Yongnuo YN-560 OS02037 Mark III system with integrated Flash Radio Trigger" works?