Description: This is a compact 3 1/2-digit autorange digital multimeter for measuring DC/AC voltage, DC/AC current, resistance, diode and continuity. It hasthe functions of auto-zeroing, polarity selection, data hold, overrangeindication, backlight, auto power-offwith theflashlight. It is easy to operate andideal instruments in fields, laboratory, workshop andhome applications. Features: Display:3 1/2-digit LCD with a max.reading of 1999 Polarity:Auto polarity indication. Overrange indication:"OL" on display. Auto Zeroing Function Sampling Rate:Approximate 3 times per sec. Operating Temperature:5-40 Storage Temperature:-20-60 Battery:Single button cell(CR2032)