The TPI Model 120 is a Compact, manual ranging, basic DCV 0.5% accuracy DMM. Usage Tip: When using the Model 120, press the DATA-H button at any time on any function or range to freeze the reading on the LCD display. This function is very useful when measuring in locations where the display is difficult to read. The 120 comes complete with the following accessories: 120 Instrument Rubber Boot Test Lead Set Instruction Manual 9V Battery