TESTED AND WORKS.  *+ BUTTON GETS STUCK FREQUENTLY.  *HAS A STRONG ODOR MOST PROBABLY BECAUSE FILTER NEEDS TO BE CHANGED.  *EXTERNAL CONDITION IS POOR BUT IT STILL WORKS.  PLEASE STUDY PHOTOS.  PLEASE ASK QUESTIONS PRIOR TO PURCHASING.  PLEASE COMMIT TO BUY ONLY IF YOU ARE WILLING TO PAY.  THANK YOU GOOD LUCK!!!