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Features:* Superior sound quality.Onboard 2Wmonoamplifier(5V power of up to 3W) is directlyconnected to the speaker(recommendation 4O3Wspeakers),3.5mm gold plated headphone jackcan connect with headphones or external audio.
SpecificationsSeparate analog, digital, and IO power supplySerial data and control interface (SPI)1 headphone and audio output interface1 microphone for recording, support audio encoding format1 line input interface; supports MP3 and WAV stream
Features:Amplifier Chip:TPA3110Output Power:15W x 2Working Voltage: DC 8-18VWorking Current: Max:3A Static state:8mAEfficiency:≥90%SNR:100dBFrequency Range:20Hz-20KHzSize: 33 x 25 x 3.5mmSpeaker:4-8ΩNet Weight:about 4g
5v Active Buzzer Magnetic Long Continous Beep Tone Alarm Ringer 12mm MINI Active Piezo Buzzers
SpecificationsOn-board MT8870 frequency decoder chipOn-board audio input interfaceOn-board LED lights for output state indicationPCB Size: 26.5 x 24.5 mm