1This is a multi-function DC meter based on 2.4G wireless data transmission technology. 2It can measure miscellaneous parameters such as voltage, current, power, charge and discharge capacity, watt-hour, time, and temperature. 3It has over-current protection, under-voltage protection, and limited protection and other protection functions. 4The instrument can automatically identify the direction of the current, and the battery capacity can be monitored in real time. 5The instrument uses TFT LCD display, display information is comprehensive, user-friendly and better interaction.