Features Large Screen Display: The LCD screen simultaneously shows voltage, current, active power, and energy, allowing for quick and easy monitoring of your electrical systems Power Alarm Features: Equipped with power alarm threshold and overload alarm functions, ensuring you stay informed about potential issues for enhanced safety Data Memory Function: This device can store measurement data even when powered off, providing you with reliable access to your previous readings for better analysis Convenient Backlight Control: A simple short press of the key activates or deactivates the backlight, making it easy to read measurements in low-light conditions Built-in Current Shunt: The integrated current shunt design simplifies setup and usage, saving you time while providing accurate readings for your electrical applications Features: 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 pr the key to turn on or off the backlight 5、Built in current shunt design, convenient for using and saving your time Specification: Features: Large screen LCD displays voltage, current, active power, energy at the same time. The DC voltmeter is designed with power alarm threshold, overload alarm function. It has memory function can store measure data when power off. Short pr the key to turn on or off the backlight. Built in current shunt design, convenient for using and saving your time. Specification: Brand: PEACEFAIR 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 0.00-20.00A Note: This module is only suitable for 6.5~100V DC power. This module is suitable for indoor, not outdoor. Applied load cannot exceed the rated voltage and current. The wiring order cannot be wrong. Built in current shunt design, don't need to connect outside. Packing Included: 1 x Voltage Current Meter Package List