Emisor + Receptor RF602   RF-602 - Manual del usuario 1.pdf RF-602 - Manual del usuario 2.pdf You can easily achieve flash trigger as well as wireless shutter function by using a pair of RF-602 transmitter/receiver.         Wireless flash trigger: Asa flash trigger, RF-602 trigger both flash speedlite and studio flashes,  the flash sync speed is up to 1/250s Wireless shutter release: As the wireless shutter release, its working range is up to 100 meters Full-way press the release button starts the continuous shooting or long exposure Features and specifications: 2.4GHz band-16 selectable operating frequencies for eliminating interference The RF-602 transmitter/receiver pair may be used to trigger all studio flash units employing a standard phone jack or mini phone jack sync input 3.5mm mini phone jack and 6.35mm full size sync jack adapter are provided Flash sync speed: 1/250s Transmitter distance: 100m Release: half-way press, full-way press Receiver stand-by time: up to 45 hours(AAA battery) Package includes: 1 x RF602TX transmitter 1 x RF602RX receiver 1 x shutter release cable 1 x PC synce cable 1 x sync cable with 6.35mm plug size 1 x adapter with 3.5mm plug size