<b>Notes</b><br><br> <b>Temperature detection:</b><br> Range:-10~50℃/14-122℉<br> If the Temperature is out of the range,HHH(above 50 ℃) or LLL(below -10℃) will be not display.<br> 2.For safety purpose, there's a piece of insulated plastic located at the bottom of the battery, which needs to be pulled out before use.<br> 3.The USB data cable needs to be connected then the screen to light up.<br>