Phottix Strato II Multi 5-in-1 Receiver for Sony • 4 groups: A, B, C, D • 4 Channels • 150+ m range • 1/250 sec. sync speed* • Flash wake-up functions* • Hot shoe / PC Flash triggering • Studio strobe triggering • Wired & wireless shutter release functions • Pass-through hot shoe on transmitter allows on camera flash to use TTL functions • 2.4 GHz. frequency • Uses AAA batteries • Compatible with Phottix Strato™ 4-in-1, Phottix Atlas II, Phottix Odin Wireless Triggers & Phottix Mitros+ • TTL Transceiver Flashes. • On compatible flashes & cameras Extra receivers for the Phottix Strato II system. The Phottix Strato II Multi 5-in-1 Wireless Trigger System gives photographers incredible control over their flashes & Monolights. Four channels & four groups provide unparalleled control in the studio or on location. * On compatible flashes & cameras. The Strato II Multi can be used as a wired or wireless shutter release. The 2. 4 GHz. transmitter & receivers offer ranges of more than 150 meters & sync at speeds of 1/250 second *. * On compatible camera. * Minolta hot shoe available. Hot shoe adapter from Sony is required for using newer camer with ISO hot shoe.