See More: http://goo.gl/7NOhu8 <br /><br />Master security : http://howsecurity.com <br /><br /> Wireless - Battery operated <br /> Works with up to six (6) push buttons, motion detectors or door contacts for added security and convenience <br /> Six (6) chime tunes, fully adjustable volume and six (6) visual alert icons <br /> Self learning code system automatically adjusts to eliminate interference <br /> 450-ft operating range
