... Audio amplifier with voice prompt 1.Built-in audio amplifier 2.Support 10W audio output Guangzhou Waytronic High-pitched voice alarm ,Audio amplifier with voice ... prompt FeaturesAudio format : wav , 16bit, mono ,sampling rate supports 6KHz,8KHz ,….20KHzSupport 6K- 22K samping WAV voice ... , Bionic systems, broadcast, Voice prompts and etc For more ...