• Three start mode: auto, manual and contact input

• Support multiple audio inputs, such as emergency broadcast, U disk, MIC, external line 1, external line 2

• Provide MP3 and WMA formats

• Supports 10-level cascaded power amplifiers

• Large reserved space for broadcast sound, and broadcast sound can be synthesized and imported

• Automatically detect U disk and MIC

• LED for emergency broadcast

• Black and white 128×64 LCD, displaying 32 characters.