Product Name: Original Fluke 18b+Digital Multimeter Model NO.: Fluke 18B+Digital Multimeter Display: LCD Additional Measuring Item: Other Range Conversion Type: Other Maximum Scale: Other Connection Type: Other Power Source: AC and DC Theory: Other Accuracy: Other Display Mode: Digital Installation: Portable Trademark: Fluke Transport Package: Carton Specification: 183 x 91 x 49.5 mm Origin: China Product Description Precision specificationsAfter calibration, accuracy can be maintained for 1 year, operating temperature is 18 °C to 28 °C, relative humidity is 0 % to 75 %.The precision specification is as follows: ±([reading %] + [minimum significant digit]).