DSC EV-DW4917 Wireless Recessed Door 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"> Small， compact design </span></li><li><span class="a-list-item"> Long-life lithium battery included </span></li><li><span class="a-list-item"> Flexible mounting options (screw mount or press fit) </span></li><li><span class="a-list-item"> Reliable 433 MHz technology </span></li><li><span class="a-list-item"> Powerful， rare earth magnet </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31REdjEfhPL.jpg" noproxy>