Qianli LT1 insulate Power Supply DC Diagnosis instrument, QianliToolPlus LT1 Individual Power Supply DC Diagnosis Meter For mobile Phone 6-12 Pro Max. Feature: Sensitivity + Precision Mechanical Meter+ Digital Display Meter No pollution to the repair machine flow Independent power supply for each power-consuming components Keep updating more functions Added three expansion card slots Save space and can be switched at anytime Can be used with 1/4 bracket Indication light Display Below 5V:Green light is on 5-9V:Green light flashes slowly Above 9V:Green light flashes frequently