ZK-R21E Volume Indicator bluetooth Audio Power Amplifier Board 2.1 Channel Subwoofer Module

APP Click here to openFeature 1 2 1 channel bluetooth audio amplifier2 50W 50W 100W subwoofer3 Protection mechanism over temperature over current short circuit anti static protection4 Features Support wuzhi Audio APP Modify the bluetooth name password settings promptsSound volume adjustment on off prompt sound sleep aid sound effect selection custom sound effect U disk playlist volume indicator brightness adjustment 5 Cool indicator with high definition sound qualitySpecification Model ZK R21EName 2 1 channel 50W 50W 100W subwoofer stereo bluetooth audio power amplifierPower amplifier chip domestic chipBluetooth version 5 1Audio input Bluetooth AUX U disk USB sound cardAudio output left channel 50W right channel 50W subwoofer 100WAdapter power supply DC9 24V ≥7A can not be connected to AC Adapter speakers left and right channels 15 50W 4 8Ω subwoofer 30 100W 4 8ΩVolume adjustment multi function knob 360 degree stepless tuning with volume level indication Click Play PauseDouble click mode switch Bluetooth U disk AUX Press and hold for 1 second turn on offRotate adjust the volumeProtection mechanism over temperature over current short circuit anti static protectionFeatures Support Wuzhi Audio APP Modify the bluetooth name password settings promptsSound volume adjustment on off prompt sound sleep aid sound effect selection custom sound effect U disk playlist volume indicator brightness adjustment Product size 81x81x37