Cincinnati Test Systems” Sentinel M24 leak-test instrument features expanded capabilities that provide control for a single station or up to four independent stations. The M24 also provides enhanced operator interface and communications capabilities. The instrument provides very repeatable high-resolution tests, fast cycle times, and a VFD graphic display. The instrument can communicate directly to factory or other networks by linking to Ethernet or through conventional RS232 and RS485 ports. It can also send messages directly to PDAs or other e-mail clients.