Features: 1Superior Appearance: This energy usage analyzer is equipped with large screen clear digital LCD display for your easy reading. 2Electrical Monitor: The monitor is the killer app for high cost energy appliances to help you reduce energy consumption and save money. 3Multiple Applications: This power metering socket has overload alarm electric alarm cost alarm LED lamp indication and other alarm functions. 4Overload Protection: When the overall power exceeds the rated power of the monitor the LCD displays overload and is accompanied by a rumbling noise to alert the user. 5Multiple Specifications: Power (W) energy (kWh) voltage amperage power factor cost minimum and maximum power which is the ideal choice for energy consumption monitoring. Specification: Item Type: Power Metering Socket Material: ABSWeight: Approx. 212g/ 7.5ozSize: Approx. 6.6x13.8x7.2cm/ 2.6x5.4x2.8inUsage: Metering socketFrequency Display: 50HzWorking Current: Maximum 13ACurrent Range: 0.005A-13APower Supply Range: 1W-2990WBattery: Button battery x 2 L1154F 180mAh (capacity of one) (shipped without battery) Package List: 1 x Power Metering Socket