4.3 DC Current Measurement (675 only) ......174.4 AC Volt Measurement ........................... 184.5 DC Volt Measurement ........................... 194.6 Resistance Measurement ..................... 204.7 Continuity Measurement ....................... 214.8 Temperature Measurement ................... 224.9 Frequency Measurement UsingVoltage Input ......................................... 234.10 Frequency Measurement UsingCurrent Input ......................................... 245. MAINTENANCE....................................... 255.1 Warning! ................................................ 255.2 Cleaning ................................................ 255.3 Battery Replacement............................. 25Repair and Calibration ............................................ 27Technical and Sales Assistance ............................. 27Limited Warranty .................................................... 28Warranty Repairs .................................................... 28