Check the listing for details. Industrial 50W MP3 Player 7 Input Trigger Stereo Audio Player for Museums. Condition: New. Listed at 52.95 USD. NOTE: This is the Positive trigger version and it is also adviable with Negative trigger Description: The FN-T718 is an industrial MP3 player designed to provide stereo audio output for museum exhibits, talking displays and other industrial/commercial applications. It has not only a built-in 8MB flash memory but also a slot for a micro SD card as well as a USB connector for a USB pen drive that hold the sound file(s), and connectors for up to 7 push buttons for sound activation. Upon activation the unit will immediately play the sound file once (by default) and become ready for the next activation. And it supports 8-type trigger modes to meet different needs in different applications. A trigger mode can be set with a config file easily. Besides, it's possible to switch on an external LED light during playback of a sound file. Please note that a computer Features:Supports inserting USB flash drive and micro SD card as the extended storage devices. Supports max. 32GB USB flash drive and max. 32GB micro SD card. 7 trigger inputs available and they can be connected with as many as 7 push buttons/switches/relays, etc. Supports 8 types of trigger modes and each trigger mode can be set easily through a config file (text document). Built-in a 50W*2 class D amplifier and the audio output is powerful. Uploading audio files by connecting the micro USB port of the device to computer with a USB data cable. Sound volume is adjustable through turning the volume knob. Able to drive an external equipment like a warning light or a motor simultaneously when it is playing a sound. Equipped with a 3.5mm audio output jack that can be connected to an external amplifier or an active speaker. Adopts solid and durable aluminium alloy case. Industrial grade design and strong anti-jamming capability. Technical ParametersWorking voltage: 12-24V DCWorking current: ≥8500mA @12V (when it has two 50W 8 ohm speakers) ≥4250mA @24V (when it has two 50W 8 ohm speakers)Power consumption: ≤100WFlash memory size: 8MBAudio format: MP3