Item Type: Power Metering Socket Material: ABS Weight: Approx. 212g/ 7.5oz Size: Approx. 6.6x13.8x7.2cm/ 2.6x5.4x2.8in Usage: Metering socket Plug: UK Plug Operating Voltage: 230V ac Frequency Display: 50Hz Wide Voltage Range: 220V-250V Working Current: Maximum 13A Current Range: 0.005A-13A Power Supply Range: 1W-2990W Battery: Button battery x 2 L1154F 180mAh (capacity of one) (shipped without battery) Package List 1 x Power Metering Socket 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.