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Note
Please note that the package does not contain Raspberry Pi.
Please note that there are no any audio output interfaces on ReSpeaker 4-Mic Array for Raspberry Pi. It is only for voice capture. And you could use the headphone jack on Raspberry Pi for audio output.

Technical details
Dimensions：65mm x65mm x9mm
Weight：G.W 38g
Battery：Exclude
MIC：4 analog microphones
LED：12 APA102 programable RGB LEDs, connected to SPI interface
Raspberry Pi 40-Pin Headers：support Raspberry Pi Zero, Raspberry Pi 1 B+, Pi 2 B, Pi 3 B, Pi 3 B+，Pi 4 B
AC108：highly integrated quad-channel ADC with I2S/TDM output transition
Software Algorithm：VAD(Voice Activity Detection), DOA(Direction of Arrival) and KWS(Keyword Search)
Grove：2 Grove Interfaces
Voice Capture Distance：3 meters radius voice capture

Part List：
ReSpeaker 4-Mic Array for Raspberry Pi*1

36:T438,Easy to set up, I have the mic and sample LED scripts working. The audio quality and recording volume are not up