Master Lock 5441D 3-1/4-inch Wide Electronic Wall Mount Lock Box<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"> No monthly data package or shared access fees， no activation or monthly usage fees. No long-term contracts </span></li><li><span class="a-list-item"> No combinations to remember: Your smartphone unlocks the lock box， or enter numerical code on lock keypad for easy backup entry when your smartphone isn’t present </span></li><li><span class="a-list-item"> Share temporary or permanent access via Bluetooth or keypad code with invited guests or coworkers， monitor activity， and receive tamper and low-battery alerts all from your free Master Lock Vault eLocks app for Android and iOS </span></li><li><span class="a-list-item"> Built for permanent installation on a flat surface. Large storage capacity for keys and access cards. Easy to replace battery (CR123A preinstalled) </span></li><li><span class="a-list-item"> Military-grade Bluetooth authentication and encryption </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41DCXtjXDEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41lqXvvjuHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41d3bYCaTwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51BEH89uvZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41TOh-2NQQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/417QhZNesIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/71zxekdm6%2BS.png" noproxy>