The Snap-on 500 PSI Wireless Pressure Tester Set, No. EEPV700-MSTR, includes a digital display transducer unit and all the necessary adapters in the EEPV700-KIT and EEPV700-ADD as well as a free app. It's ideal for compression, vacuum, fuel, engine oil, and transmission fluid pressure up to 500 psi. The set’s tray features compartments and moveable dividers to keep technicians organized while the digital display unit comes in an individual, protective carry case. The system stores results for viewing on the tool or transmits them wirelessly via Bluetooth. The minimum/maximum readings are graphed to help in diagnosing the issue and up to 12-cylinder compression readings can be stored.