This Riken Keiki 570-04W Multi Gas Monitor is in used condition and was removed from a working environment. This unit came from a local lab that had surplus equipment. We urge customers to view all photos as they show overall condition, included accessories and functionality. Although we do not have the means for full testing, we guarantee functionality with a 30 day full money back return policy. Buyer handling return shipping. We will be happy to provide additional information as well as photos so please feel free to contact us with any questions. Please Note: One minor issue worth noting is the digital meter displays (both left and right) have become loose. This does not affect functionality in any way but we will look into securing prior to shipping. Also note that unit appears to have been hard-wired by the previous owner. For testing purposes unit was powered with a hard-wired cord (not included). For additional information please copy and paste link below: https://www.rkiinstruments.com/pdf/rm580.pdf If link is no longer available please contact us for copy of PDF