LT2 Qianli YCS DC Power Supply Diagnosis Meter, A Highly integrated Diagnostic Tool For Electronics Repair , Particularly For Mobile Phones. Product Name: Qianli YCS LT2 DC Power Supply Diagnosis Meter. Key Features: It offers individual power supply, real-time current curve display, and both digital and mechanical meters for precise readings. Purpose: Designed for phone boot testing, battery protocol switch ammeter measurements, and general electronics repair.