Oplink Connected DWM1301 Door and Window Sensor (White)<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"> Detects open/close status of door or window </span></li><li><span class="a-list-item"> Works with ALL Oplink Security systems </span></li><li><span class="a-list-item"> Easy installation - no configuration! </span></li><li><span class="a-list-item"> Tamper proof </span></li><li><span class="a-list-item"> Slim design </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31xat2L25DL.jpg" noproxy>