Features: 1. 7 Monitoring Modes: This socket power meter supports monitoring of time, power, costs, accumulated power consumption, voltage, frequency, current, power factor, minimum power, maximum power, and electricity price. 2. Real-Time Monitoring: Simply connect your electrical devices to this power consumption meter. The energy meter monitors and records power consumption and electricity costs of the connected device, helping you track energy usage of household appliances. 3. Backlight and Memory Function: Equipped with a built-in buffer battery, this power meter retains data during power outages. Press any button to activate the backlight for 10 seconds to view data in low-light conditions. 4. Overload Warning: When the connected device exceeds 3680W, the LCD screen flashes "Overload" to alert the user, helping protect both the connected device and the meter. 5. Easy to Use: Press the "FUNC" button to select monitoring modes, the "COST" button to set the electricity rate, and the "UP" and "DOWN" buttons to adjust the price. Use the "Reset" button to clear all settings. Designed for simple operation. Specifications: Color: White Current Measurement Accuracy: +/-2% Power Measurement Accuracy: +/-2% Battery: 3.6V NI-MH rechargeable battery Power Supply: 230V AC 50Hz Maximum Load: 16A, 3680W Current Range: 0.0A - 16.0A Product Dimensions: 12.7 x 6 x 7.33cm Product Weight: 193.2g Backlight: Yes Package Included: 1 x Socket Electricity Meter