Features 1. ENERGY CONSUMPTION METER: Monitor which appliance is the culprit behind high energy costs, helping you save energy and money. 2. BLUE BACKLIT LCD DISPLAY: The digital large backlit LCD screen makes it easy to read and record data, especially in the dark. 3. OVERLOAD PROTECTION: When the total power exceeds the monitor's rated power, the LCD will display \"OVERLOAD\" with a loud sound to warn the user. 4. VARIOUS PARAMETERS: Power (W), Energy (kWh), Voltage, Amps, Power Factor, Cost, and Minimum & Maximum Power. Ideal for monitoring energy consumption of household appliances. 5. TIPS & GUARANTEE: It can store the latest data so you can read it after the power meter is unplugged. We take full responsibility for product quality. If you are not satisfied with it or for any reason, we will REFUND you in time. Order without worry. Specification ENERGY CONSUMPTION METER: Monitor which appliance is the culprit behind high energy costs, helping you save energy and money. BLUE BACKLIT LCD DISPLAY: The digital large backlit LCD screen makes it easy to read and record data, especially in the dark. OVERLOAD PROTECTION: When the total power exceeds the monitor's rated power, the LCD will display \"OVERLOAD\" with a loud sound to warn the user. VARIOUS PARAMETERS: Power (W), Energy (kWh), Voltage, Amps, Power Factor, Cost, and Minimum & Maximum Power. Ideal for monitoring energy consumption of household appliances. TIPS & GUARANTEE: It can store the latest data so you can read it after the power meter is unplugged. We take full responsibility for product quality. If you are not satisfied with it or for any reason, we will REFUND you in time. Order without worry. This product is suitable for electrical equipment with a power below 3000W Working voltage: 230V 50HZ Working current: 13A Wide voltage range: Display power (W): 0W-3000W Current display (A): 0.0A-13.0A Time display range: 0-9999 days Voltage display range: 0V-9999V Frequency display: 0HZ-9999HZ Price display range: 0.00-99.99/KWH KWh and total cost display: 0.00KWH-9999KWH, 0.00-9999 Features: Display voltage Record frequency Record current Record power factor, power Record minimum and maximum power Record accumulated kWh Record time Record electricity costs Blue backlight, read more clearly Abnormal display or no response with reset button Built-in 3.6V rechargeable battery (NI-MH), can store the total power and storage settings Package list