Detailed Product Description Pen style, stainless steel sensing tips, direct measuring, portable, wide me-asuring range, applied to refrigerant, heating and food processing etc...Technical parameter:Measuring range: -50oC∞ + 300oC (-58oF∞ +572oF)Distinguish: 0.1oCAccuracy : ±1oC (-20oC ~+ 80oC) ±5oC (other range)Power: DC1.5V AG13 button batteryProduct size: 20.5×206mmScreen size: 21×8mm