System Sensor P2W 2 Wire Fire Alarm Horn/Strobe Std Candela 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"> Plug in deisgn </span></li><li><span class="a-list-item"> Standard settings: 15， 15/75， 30， 75， 95， 110， 115 cd </span></li><li><span class="a-list-item"> Same mounting plate for wall and ceiling </span></li><li><span class="a-list-item"> Rotary switch for horn tone and chime selection </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51TpAwSRXYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/519UVq-LpSL.jpg" noproxy>