Optex TD-20U Indoor/Outdoor Wireless Infrared Transmitter<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"> 2000 ft. transmission range， line of sight </span></li><li><span class="a-list-item"> Uses passive infrared to detect motion and send RF signals to receivers </span></li><li><span class="a-list-item"> Weather proof housing (IP54 rating) for both indoor and outdoor use </span></li><li><span class="a-list-item"> Selectable 50 ft. Long Range or 17 ft. Fan (Wide) detection pattern </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41X0nIUkFuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41ZZBHiV0HL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41X0nIUkFuL.jpg" noproxy>