Product name: mp3 bluetooth decoder board BT Bluetooth module Ver: 1.2 Input voltage: DC5V-12V Bluetooth version: 4.2 Bluetooth name: LQSC_BT Working temperature: -40℃ to 85℃ Full patch process Wide range of working voltage Power reverse protection Dual AUX input terminals (3.5mm and 2.54mm 3P) Dual audio output terminals (3.5mm and 2.54mm 3P) An external antenna (suitable for installation in a metal box) LED indicator description Fast flashing: waiting for connection Slow flashing: audio is playing Steady on: connected Instructions: This module is a Bluetooth receiver module, which outputs standard analog audio signals. At the same time, an AUX input terminal is added to facilitate connection to other audio sources. When Bluetooth is not connected, the AUX terminal and OUT terminal are directly connected. When the Bluetooth is connected, the Bluetooth audio signal is output from the OUT terminal, and the AUX terminal and the OUT terminal are disconnected size:55.12x32.26mm Material:PCB+metal colour:black Package Contents: 1 * mp3 bluetooth decoder board 2 * 2.54mm 3P audio shielded cables 2 * 2.54mm 3P socket terminals Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.