Parameters: Measuring range: AC 80.0-300V; AC 0-100.0A Measuring accuracy: 1% ± 2digits Voltage display: Yellow LCD Current display: Blue LCD Size: 70*39*40mm Wiring: Green terminal: Voltage input Blue terminal: Current transformer secondary input Note: Please passing the wire of the measuring circuit through the hole of transformer. Important: 1. Voltage input (yellow terminal) and current transformer secondary input (blue terminal) cannot be connected to be wrong, otherwise the instrument will be burned out. 2. It is only suitable for pure AC 50Hz-electric power supply. The meter will get permanent damage if you measure the square wave, dc-to-ac inverter output and modified sine wave. Package Includes: 1x Digital Voltage & Current Meter