["MP3 Module:\r\n1. Supports sample rates: 8,11.025,12,16,22.05,24,32,44.1,48 KHZ\r\n2. fully supports the FAT16 / FAT32 file system, maximum support 16G tf card\r\n3. DC 5V 1A Power, with two sets of interfaces\r\n4. Volume adjustment\r\n5. low trigger on trigger.\r\n6. Support 0-2W, 4-8Ω speaker load\r\n7. with a standard 3.5 audio interface, support for audio, effect connection.\r\n \r\nSpeaker Specifications:\r\nWithin the magnetic small speakers: 0.5W 8R\r\n\r\nTrigger a for play once\r\n9 trigger port, direct triggering Play\r\nCombined MCU IO port 31 to for play MP3 encoded hair\r\nInternal amplifier with 3W to meet most applications\r\nNumerous basis, without programming, simple operation\r\n\r\nApplications:\r\n1. MCU voice broadcast application\r\n2. factory, warehouse, corridor safety warning\r\n3. for Smart car, electronic design applications\r\n4. The electrical and mechanical equipment, electronic applications early warning alarm warnings\r\n5. Advertising, automatic broadcast, regular broadcast news\r\n6. Device before doing voice guidance, voice warning\r\n\r\nSpecifications:\r\nBoard Size: 4x3.8cm/1.57x1.5\"\r\nQuantity: 1 Pc\r\n\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nNo Retail Package\r\nPackage Includes:\r\n1 x MP3 Voice Module"]