Comus-G3SB001-Grade-3-Alarm-Extension-Speaker-16-Ohm-92d B-White-Comus-G3SB001-p-A-16-Omega-extension-speaker-for-alarm-systems-A-strong-Mylar-cone-enables-the-speaker-to-emit-92d B-1m-&-there-is-an-anti-tamper-switch-for-added-security-A-weather-resistant-white-polycarbonate-housing-allows-the-speaker-to-be-mounted-outside-or-in-harsh-environments-p-Comus-G3SB001-16-Ohm-White-Alarm-Extension-Speaker