Greenlee 620K Security and Alarm Kit<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"> 200EP inductive amplifier includes adjustable volume control， an LED for visual signal strength indication and powerful speaker for use in noisy environments </span></li><li><span class="a-list-item"> 620 Alarm Loop Verifier / Tone Generator is designed specifically for the alarm &amp; security industry. Latching feature provides a simple method for identifying intermittent failures and confirming operation of switches at remote locations </span></li><li><span class="a-list-item"> In latching mode， the #620 tone generator will catch the alarm condition and continue sounding until it is reset. </span></li><li><span class="a-list-item"> Battery operated， 9V not included </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41OaeAZfNfL.jpg" noproxy>