This listing is for a Midtronics battery testing system. Model number is EXP-1000HD. This can be used on 12v or 24v systems. Everything works as it should. This tester comes with a variety of cables, wireless printer, amp clamp, and a wireless OBD2 or 9 pin heavy duty connector. If you have any questions, please ask. Most other listings on eBay are for the tester only, this is a complete setup with everything you need.