1、8 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. 2、FAST AND ACCURATE: Adopt 32 bit microcontroller, the AC power meter has rapid response speed, equipped with precise current transformer for accurate calculation. 3、CLEAR 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. 4、DATA 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. 5、WIDE 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. Item Type: Digital Voltmeter Ammeter Panel Material: PC Model: SPM005 Working Voltage: AC60-300V Color Screen Size: Approx. 60x19mm/2.36x0.75in (Display Area) Display Refresh: 3 Times Per Second Voltage Range: AC60-300V Temperature Range: -50.0℃ to +200.0℃ Power Range: 0.01W to 99999KW Frequency Accuracy: 0.01Hz Electric Energy Range: 0.01kWh to 99999kWh Time Range: 0.01H (Hour) to 99999D (Day) Memory Data: 10 Years Environmental Temperature: -10℃ to +60℃ Humidity: ≤85% RH (Without Condensate) Overall Size: Approx. 78x43x23mm/3.07x1.69x0.91in 1 x Digital Voltmeter Ammeter Panel 1 x Current Transformer 1 x User Manual