Model: OP12 - A new style innovative photography gear which combined the function of flash trigger speedlite trigger and remote shutter enabling you control studio strobe flashgun and camera only by one set of remote - This gear is consisting of two parts: a transmitter that can be placed on camera hot shoe mount a receiver with hot shoe terminate - Transmit frequency: 433 MHz - Workable range: Transmitter distance: (for cameras) approximately 100m (open area) (under spacious non-disturbance environment) (for strobes and speedlites) approximately 30m (open area) (under spacious non-disturbance environment) - Channels: 16 - Battery for transmitter: 12V 23A (included) - Battery for receiver: 2 x AAA batteries (not included) - Sync speed: 1/250S - Compatible camera model: Olympus SP-510UZ/SP-550UZ/E400/E410/E510/E450/E520/E420 - Package included: - 1 x Transmitter - 1 x Receiver - 1 x 23A battery - 1 x Remote cable - 1 x Sync cable - 1 x PC cord - 1 x 6.35mm/3.5mm convert adapter - 1 x English/Chinese user manual