1、Superior Appearance: This energy usage analyzer is equipped with large screen clear digital LCD display for your easy reading. 2、Electrical Monitor: The monitor is the killer app for high cost energy appliances to help you reduce energy consumption and save money. 3、Multiple Applications: This power metering socket has overload alarm, electric alarm, cost alarm, LED lamp indication and other alarm functions. 4、Overload 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. 5、Multiple Specifications: Power (W), energy (kWh), voltage, amperage, power factor, cost, minimum and maximum power, which is the ideal choice for energy consumption monitoring. 1 x Power Metering Socket  Item Type: Power Metering Socket Material: ABSWeight: Approx. 212g/ 7.5ozSize: Approx. 6.6x 13.8x 7.2cm/ 2.6x 5.4x 2.8inUsage: Metering socketPlug: UK PlugOperating Voltage: 230V acFrequency Display: 50HzWide Voltage Range: 220V-250VWorking Current: Maximum 13ACurrent Range: 0.005A-13APower Supply Range: 1W-2990WBattery: Button battery x 2 L1154F 180mAh (capacity of one) (shipped without battery)