Model: APHOPH15655K1. Phottix PH15655 Strato II Multi 5-in-1 Remote Flash Trigger Set For Sony. The Phottix Strato II Multi 5-in-1 Wireless Trigger System gives photographers incredible control over their flashes and studio lights. Four channels and four groups provide unparalleled control in the studio or on location. The Strato II Multi can be used as a wired or wireless shutter release. The 2.4 GHz. transmitter and receivers offer ranges of more than 150 meters and sync at speeds of 1/250 second. Features: - 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 and 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 Wireless Triggers- Sony Version includes shutter cables for: - S6: A900/ A700/ A580/ A560/ A550/ A500/ A450/ A350/ A300/ A200/ A100/ A55/ A35. Technical Specifications: - Frequency: 2.4 GHz. - Range: 150+m. - Channels: 4 channels. - Groups: 4 groups - A, B, C, D. - Batteries: 2 x AAA batteries (Transmitter and Receiver). - 5V DC (external power port). - Max sync speed: 1/250 sec. - Output: Hot shoe, 3.5mm, 2.5mm ports (receiver). - Input: 3.5mm PC input port (transmitter). - Attachment: 1/4 tripod lug, cold shoe (Receiver). - Input voltage: 2.5-3.2V. - Minimum response time: 350us (For Canon). - Top ports: TTL port on the top of transmitter. - C/F port voltage handling: 5V. - Flash port voltage handling: 6V (transmitter), 300V(receiver).Bundle Also Includes: - Phottix Strato II Multi 5-in-1 Receiver. - Microfiber Cleaning Cloth.