Instant 4-Input Channel Audio Triggering from Programmable 4-Button Trigger MP3 Player & Wall Mount Speaker

This triggerable audio player features four GND-triggered inputs and supports both MP3 and WAV formats for reliable sound playback. It combines built-in flash storage with expandable microSD capability, a built-in amplifier, and straightforward USB file loading for practical integration in various setups. 1. Storage capacity includes 8MB of built-in flash memory for approximately 8 minutes of 128kbps audio, with expansion support for microSD cards up to 32GB. 2. Four trigger inputs respond to negative pulse or ground signals and can be activated by buttons, switches, or relays with individually configurable modes. 3. Power requirements range from DC 9V to 24V, and the unit features a built-in 10W class D amplifier alongside an adjustable volume potentiometer. 4. Audio files are transferred via USB connection, where the device appears as a standard flash drive, requiring no additional computer software. 5. The package contains one triggerable audio player manufactured with plastic and metal components.