Display: LCD, 1999 counts, updates2-3/ect. Measuring method: -slope integration A/D converter Overrange Indication: figure "1"on the display Polarity Display: - for Negative Polarity Working Temperature: 0-40 °C Storage Temperature: -10°C-50°C Size: 145 x 70 x 31 mm Weight: 140g Package Includes： and high quality. The meter is a hand held 31/2digital multimeter for measuring AC/ voltage and AC/ current resistance diode transistor freguency temperature and continuity test with battery operated. Fit for schools factories families and amateur wireless lovers. Protective : F500mA/250V Power: 9V NEDA1604 or 6F22 Battery (NOT Included) The back light of display is optional. Specifications 1 x A830L MINI Pocket Hand-held Digital Multimeter 2 x Probe 1 x User's Manual Small and compact design. A great electronic measuring instrument. Protective : F500mA/250V Power: 9V NEDA1604 Or 6F22 Battery (NOT Included) The Back Light Of Display Is Optional. Display: LCD, 1999 Counts, Updates2-3/ect. Measuring Method: -slope Integration A/D Converter Overrange Indication: Figure "1"on The Display Polarity Display: - For Negative Polarity Working Temperature: 0-40 °C Storage Temperature: -10°C-50°C Size: 145 X 70 X 31 Mm Weight: 140g Package Includes： A Great Electronic Measuring Instrument. Specifications