... amplifier 2.Support 10W audio output 3.color:black,red Alarm Horn, Car Alarm, Alarm Siren FeaturesAudio format : wav , 16bit, mono ,sampling ... Operating Voltage: DC9V ~ 24VRated output power: 10WattsSopport Key control and MCU Signal to noise ratio: ≥ 82db Size 10.5mm*8mm ... *7.5mmApplicationsalarm system, Bionic systems, broadcast, Voice prompts and etc For more details,please don't hesitate to contact ...