Honeywell 5816OD Outdoor Wireless Magnetic Contact<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"> Wireless for easy installation </span></li><li><span class="a-list-item"> Battery-powered </span></li><li><span class="a-list-item"> Maximum gap 1.75" </span></li><li><span class="a-list-item"> Weatherproof </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/318rsxIY1wL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41lcmt4BQNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41P0hwrr%2B-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/417H-c-tOCL.jpg" noproxy>