... amplifier 2.Support 10W audio output 3.color:black,red Alarm Horn, Car Alarm, Alarm Siren FeaturesAudio format : wav , 16bit, mono ,sampling ... ≥ 82db Size 10.5mm*8mm*7.5mmApplicationsalarm system, Bionic systems, broadcast, Voice prompts and etc For more details,please don ... our pruduct------------------Guangzhou Waytronic Let sound change life-------------------- Alarm Horn, Car Alarm, Alarm Siren