The Transforming Technologies 288B Charge Plate Monitor is an innovative non-contacting meter that has a large easy-to-read high contrast LCD display and detachable 6" x 6" plate. This unit has fully configurable operating parameters with manual and automated testing of decay and balance. The Transforming Technologies 288B Charge Plate Monitor also features built-in temperature and humidity sensors and internal storage for up to 1500 tests, 500 locations and 4 test protocols. This unit also features an internal battery for portable operation and soft keys for highly intuitive programming. Please note this unit is compatible with the new 288B graphing software. The 288B is comparable to 3M 711 Charge Analyzer/Charge Plate Monitor.