10W 15W 20W XY-P15W Bluetooth 5.0 Amplifier Board 12V 24V Stereo Audio Digital AMP Sound System with Shell Case Description: The Bluetooth audio amplifier board input voltage range is DC 8-24V. Current input: 2A or above. NOTE: Input voltage must no more than 26V, otherwise the audio amplifier module will be damaged. Two channels 10W/15W/20W amplifier board work with various speakers (4-16 ohm), supporting Bluetooth stereo audio input. This Bluetooth audio amplifier module come with a protective shell, greatly protect the units from damaged, supporting reverse connection protection, short circuit protection and self-recovery overheat protection. Press gear potentiometer to pause/play. Turn right to increase volume and turn left to decrease volume. Indicator light design helps to know the connection condition. Using the latest Bluetooth version 5.0, the distance between Bluetooth wireless audio input and the max receive is 15m(No obstacles).   Feature: Width work voltage range Applicable multiple type speakers Knob adjustment Reverse connection protection Short circuit protection Self-recovery overheat protection Bluetooth 5.0 Protective shell   Parameter: Work Voltage: DC 8V-24V Communication distance: 15meter(Max)   Output Power(at 1KHz): Output power 16W*2 at 12V 4ohm Output power 10W*2 at 12V 8ohm Output power 15W*2 at 16V 4ohm Output power 15W*2 at 16V 4ohm Output power 20W*2 at 20V 4ohm Output power 30W*2 at 24V 4ohm(Need add extra heat sink )   Match speaker(30W~150V): 4ohm at 8V~12V 8ohm at 8V~24V 16ohm at 8V~24V Work Temperature: -40℃~85℃ Work Humidity: 0%~95%RH Module Size: 50*35*14mm