Features:

* Uses jumper to select 20 or 90 sec recording time.
* Records up to 100,000 times
* Voice IC is controlled by 8051 single chip
* The voice recorder receives voice from micro phone, plays voice through an external speaker
* The RS-232 serial port allow users to record voice from a computer
* Powered by 5 volt AV adapter
* 89C51 single-chip, 20 sec and 90 sec voice chip included.
* Recorded voice will not lose after power off
* Don't need any software to record and play voice

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