<p><b>Features:</b> <br />This wireless trigger is control discreteness for camera to trigger hot shoe flashgun synchronously. <br />Easy installation, low power consumption <br />No any damage to camera. <br />High-speed and synchronous for 1/200 second. <br />Max. working distance: 30M (open area, without interference). <br />16 channels to avoid interference. <br />The receiver has an on/off switch, and an LED to indicate triggering. <br />New design: Channel Selector outside the transmitter and the receiver. </p> <p><b>Specifications:</b> <br />Wireless Flash Trigger. <br />16 channels selectable. <br />Power Input of Transmitter: 23A 12V battery (included). <br />Power Input of Receiver: 2 AAA batteries. <br />Long lifetime of trigger battery, one year or over 20,000 continuously triggers. <br />Plug size of receiver: 3.5mm. <br />Adapter size for receiver plug: 3.5mm --> 6.35mm. <br />PC sync cable included. <br />Radio working frequency: 433MHz. </p> <p><b>How to use:</b> <br />Make sure the channel selector of both transmitter and receiver at same position. <br />Insert the receiver's trigger output plug into your flash's jack. <br />Press the test button on your transmitter. The studio light should now flash. <br />Insert the transmitter's hot shoe socket into your camera's hot shoe jack (if your camera does not have a hot shoe use a PC sync cord and insert into the socket). <br />You should now be ready to start shooting (you can use the 3.5mm sync cable for cameras without hotshoe or hotshoe is engaged). </p> <p><b>Package Contents:</b> <br />1x Trigger. <br />1x Receiver.</p>