PT-04GY 4 Channels Wireless Remote Speedlite Flash Trigger Universal 1 Transmitter & 2 Receivers for Canon Nikon Pentax Olympus

This set consists of a signal sender and two receiver trigger., Globally universal 433Mhz frequency, 4 channels., Transmitting distance up to 30M, no limits with directions or angles., Universal hot shoe interface, compatible with Canon, Nikon, Sigma, Olympus, Pentax, etc. (except Minolta SONY, for they use a special hot shoe)., Universal hot shoe interface, compatible with Canon, Nikon, Sigma, Olympus, Pentax, etc. (except Minolta SONY, for they use a special hot shoe).