Don't let the small size fool you! The United Security Products S-120 Miniature Siren allows you to add a loud, compact siren to your alarm or notification system. Measuring a mere 2 1/4"x1 1/2", this siren produces a 119 DB tone at 1 meter. This siren has a low current drain of 120mA at 12 VDC. Use with alarm systems and any product or system to increase notification abilities.