Safety protection: anti-reverse protection, short circuit protection, over temperature protection (note: when the output power exceeds 20W x 2, a radiator is required); Bluetooth: version 5.0; effective transmission distance: 10-15 meters / 32.8-49.2 feet (barrier-free), when the power is on and the connection is successful, a short and clear prompt sound; Mini stable: suitable for every installation situation; better audio performance, very suitable for your home or car system. 1. Parameters: 1. Product name: XY-P15W stereo Bluetooth power amplifier module 2. Model: XY-P15W 3. Channel: dual channel 4. Output power 6.1- Output power 16W x 2 12V 4ohm-12V 4ohm-Output power 8ohm-12V, output power 16mhm colour: black Material: PCB size: 50 x 33mm Package Contents: 4 x XY-P15W Bluetooth power amplifier board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from