Board came packaged in non-antistatic bag, all sticky from uncleaned flux. Had to clean it with alcohol and brush. Since there no manual provided for this board, I will post here some details discovered so far: To reset settings: power off, press and hold top left button, power on, release. Does not reset beeper settings. To set beeper off: while powered, press both of bottom buttons for 2 seconds. To set beeper on: while powered, press both of top buttons for 2 seconds.