PocketWizard 801-130 Plus III Transceiver Set of 2<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Kit Includes 2 Transceivers </span></li><li><span class="a-list-item"> Selective Quad-Zone Triggering </span></li><li><span class="a-list-item"> Auto-Sensing Transceiver </span></li><li><span class="a-list-item"> Two-Stage Remote Camera Triggering. Auto-Relay Mode， Long Range Capability. </span></li><li><span class="a-list-item"> Each transceiver requires two AA batteries (not included). </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41GjoxRKb0L.jpg" noproxy>