ITEM NAME:12V 24V Car Bluetooth 4.2 Audio Receiver Board Wireless Sound Stereo Module T5T8 Features: *Full Surface Mounted Technology *Wide range of operating voltage *Input reverse connection protection *Dual audio output terminals *Antenna external connection (suitable for mounting inside a metal box) *LED indicator instructions: Quick flashing: waiting for a connection Slow flashing: audio playing Keeps on: connected Specifications: *BT Bluetooth Module V1.2 *Input voltage range: DC 5-35V *Bluetooth version: 4.2 *Bluetooth name: LQSC_BT *Working temperature: -40degree Celsius to 85degree Celsius *Outer dimensions: 55.12*32.26(MM) (Approx.) Package Contents: 1* MP3 Bluetooth Decoder board 1*2.54mm 3P Audio Shielding Line 1*2.54mm 3P-Socket Terminal.BT Bluetooth Module V1.2. Bluetooth version: 4.2. 1 MP3 Bluetooth Decoder board. Input reverse connection protection. Slow flashing: audio playing. 1 2.54mm 3P Audio Shielding Line. Full Surface Mounted Technology.