Loudspeaker+ISD1820 Sound Voice Recording Playback Module With Mic Sound Audio Telediphone Module Board With Microphones the mainchip: ISD1820 size: 38mm * 42.5mm the workingvoltage: DC3 ~ 5V Loudspeaker: 8, 0.5W. features: 1.Aneasy to use10 seconds ofvoice recording 2.high-quality,natural voicerestored 3.can be used aspropagandamodule 4.withlooping, jogplayback,single-passplay function 5.availablesingle-chip control 6.thismodule candirectly drivea small speaker8 ohm0.5W Power supply:3-5V,which can be accessedpinpower; Audio recordingcontrolmode: the keyto control ormicrocontroller,IOhasdrawnthe line of control; Buttons controlaudio recordingmethod of operation: REC button:record button,you canpress and holdthe recording, release the buttonto stop recording; RLAYEkey:trigger modeplayback,press will playthiswholespeech; PLAYLkey:jog modeplayback,press and holduntilplayback, releaseto stopplayback; RPLJumper:loop modecontrol,loop playback; FTJumper:directcontrol,microphonevoicethroughthespeakercanplayback; Shipping Included: 1PCS x ISD1820 Module 1PCS x Loudspeaker 1PCS x Free cables.