Features: 18 IN 1 METER: Voltage V, current A, temperature , power factor PF, power KW, time HD, frequency Hz, electrical energy KWH, multifunctional display, meeting various needs. 2FAST AND ACCURATE: Adopt 32 bit microcontroller, the AC power meter has rapid response speed, equipped with precise current transformer for accurate calculation. 3CLEAR LCD DISPLAY: Regardless of day or night, indoors or outdoors, or even in sunlight, users can clearly see the displayed content through this clear color LCD screen. 4DATA STORAGE: With the function of storing data after power failure, there is no need to worry about losing data with our AC multimeter. The memory data is for 10 years. 5WIDE USAGE: This energy monitor can be used as ammeter, digital voltmeter, power meter and battery capacity monitor. Suitable for various batteries, such as acid batteries, lithium polymer batteries. Package included: 1 x Digital Voltmeter Ammeter Panel 1 x Current Transformer 1 x User Manual