More from Amazon.com : http://www.amazon.com/gp/product/B00JFR9Q4A?tag=purrfectcatdi-20 <br /> <br />Neewer 4 Channel FM Radio Wireless Flash Speedlite Trigger with 4 Receivers and a PC Sync Cord <br /> <br />This flash trigger device is control discreteness for camera to trigger hot shoe flashgun synchronously Its made up of two parts named signal transmitter and receiver Work through wireless remote signal controlling <br />The transmitter consists of advanced designed circuit and component and works through sending encoded signal <br />It comes with 25mm sync portwhich permits the camera without hot shoe using this flash trigger <br />Very low voltage workingSo it can ensure high level of safety and no damage to the camera <br />Note Camera and flash light are not included
