Flyron Mini PIR Motion Sensor Activated Audio Player -USB Recordable-

Features: Small and exquisite with MP3 high quality audio output.  Adopts a PIR motion sensor to trigger audio playback, and detection range is up to 4 meters.  Built-in a 4Mbytes flash memory that can store about 200 seconds of MP3 files (128Kbps).  Update audio files on computer using a USB data cable. It works like a USB flash drive on computer. No need any software.  Supports two triggering modes: all loop repeat mode and single repeat mode.  Built in 1W 8ohm speaker. Sound is clear and loud.  Two-level sound volume adjustment.  Supports two power supply modes: 3 pieces AAA alkaline batteries or an external power adapter through the micro USB port.  Mounting holes are available on the back, and with a holder it's easy to install. Dimension: 60mm x 95mm x 31mm Datasheet: http://www.electronics123.net/amazon/datasheet/FNP-704%20Mini%20PIR%20Motion%20Sensor%20Activated%20Audio%20Player.pdf