Features 【Big Screen Multi-data Dispaly】The large-screen LCD displays voltage, current, active power, and energy simultaneously. Voltage test range: 6.5-100V DC; ammeter test range: 0-20A. Suitable for 6.5~100V DC power supply. For indoors, not outdoor. 【Backlight Control】Flexible voltage and current meter buttons are used to control the backlight or not to view the detected data. Short press the key to turn on or off the backlight. 【Simple and practical】Built in current shunt design, convenient for using and saving your time. Note that only the 1 x voltage ammeter is included. It does not include any wires or accessories. 【Alarm Indication Design】The DC voltmeter is designed with power alarm threshold, overload alarm function.If the active power is greater than the threshold, the backlight and power supply will flash. 【Memory Function】The voltage ammeter has a storage function that can store measurement data when power is off. Data will not be lost in the event of an unexpected power outage. <strong>Features:</strong> 1.Large screen LCD displays voltage, current, active power, energy at the same time. 2.The DC voltmeter is designed with power alarm threshold, overload alarm function. 3.It has memory function can store measure data when power off. 4.Short press the key to turn on or off the backlight. 5.Built in current shunt design, convenient for using and saving your time. <strong>Specifications:</strong> Model: PZEM-031 Working voltage: 6.5-100V DC Voltage test range: 6.5-100V DC Rated power: 20A / 2000W Measurement Accuracy: 1.0 Weight: Approx. 78g <strong>Note:</strong> 1.This module is only suitable for 6.5~100V DC power. 2.This module is suitable for indoor, not outdoor. 3.Applied load cannot exceed the rated voltage and current. 4.Built in current shunt design, don't need to connect outside. <strong>Packing Included:</strong> 1 x Voltage Current Meter Package List