MP3 Alarm Speaker/MP3 Player Siren

Features:Built-in a high quality MP3 player with great sound quality.Built in 4MB flash memory and a micro SD slot on board.Works with most Windows, Mac, and Linux systemsUpload MP3 files to the flash memory easily through the mini USB port.Supports a micro SD card (not included) as well.Play back 4 sounds one-on-one by negative trigger.Equipped with a 10 watts amplifier for a loud sound output.Adjustable sound volume and wide range power input.Dimensions: 99x80x80(mm)Technical Parameters:Working voltage: DC 9-24VWorking current: ≤400mA(INPUT: DC12V)Standby current: 10mA (Input 12V DC)Power Consumption: ≤10WMemory size: standard configuration 4MB SPI flash (4 minutes @ 128Kbs, 8 minutes @ 64Kbs sample rate)Audio format: MP3 format 32Kbps-320KbpsPLEASE NOTE: To update the audio files (micro SD card or mini USB port for built in flash) you will need a screwdriver to take the unit apart as in the picture below.Also orders for a quantity of 100 or more units we can upload your audio files to the flash memory for you. Please contact us for details.