SELLING THIS AS A REPLACEMENT!!!!! Tria Beauty Home Permanent Hair Removal Laser (2010 Model) No Skin Sensor included Only the laser and power adapter included This is the 2010 model Works, but you will need the skin sensor to unlock it, to make sure your skin is fine to use this on.. It’s a safety feature to protect certain types of skin Free Shipping Again this will not work unless you have skin sensor to unlock it, it does work, however we sold sensor separately, when a buyer asked us too. NO RETURNS if you didn’t read description..SORRY