Specifications include, but are not limited to: 1. Compressor controls shall be UL508A listed and labeled and use standard off the shelf programmable logic controllers with HMI touchscreen. Proprietary circuit board controllers are not acceptable. 2. All replacement parts must be available within 48 hours 3. Authorized service center with trained and certified technicians must be located within 50 miles of the TBI Nashville Crime Lab. 4. Warranty a. Standard Period of Warranty – Parts and Labor - Products shall be free from Defects for the first eighteen (18) months from the date of shipment, or twelve (12) months from the documented date of startup, , whichever occurs first. b. Additional Period of Warranty – Parts Only (No Labor). In addition to the above, Compressor Air- End shall be free of Defects for a period of fortytwo (42) months from the date of shipment by Powerex, or thirty-six (36) months from the documented date of startup, whichever occurs first.