Speaker parameters: 0.5-5 watts 2-8 ohms (volume adjustable)Maximum memory supported: 32GSupported playback formats: MP3, WAVFile format requirements: You need to create a folder named "01" and then save the files 001.MP3 -019.MP3Working temperature and humidity: -20-50℃, HR: 5%-90%Name: Voice playback moduleModel: YS-M3D5TSpecifications: 7.2x3.5x0.9cmPower supply voltage: 5V (range 3.7-5.5V, support 3.7V/4.2V such as 18650, output capacity Greater than 200mah)Power supply current: greater than equal 300ma (Greater than 50ma is also acceptable when the speaker is not connected)Standby current: 36MAWorking current: Greater than 50MA (specifically related to the speaker and sound size)Trigger ports: 19 (one port corresponds to one MP3)Function ports: 5 (up and down music, volume increase and decrease, pause/play)Possible modes: single without looping, single looping, playback without interruption, long press play modeNote:When using battery power supply, make sure the capacitor capacity is large enough, otherwise it will not work properly after the voltage drops to 3.5V when there is a lack of power.Colour:As ShownMaterial:plasticPackage Contents:1 * Voice playback module