Features: 1. 7 Monitoring Modes: This socket power meter supports monitoring of time, power, accumulated power consumption, voltage, frequency, current, power factor, minimum power, maximum power, and electricity cost. 2. Real-Time Monitoring: Connect your electrical devices to this power consumption meter. It automatically monitors and records power usage and energy costs, helping you track the electricity consumption of household appliances. 3. Backlight and Memory Function: Equipped with a built-in buffer battery, the power meter retains data during power outages. Press any button to activate the backlight for 10 seconds, allowing easy viewing 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 device and the meter from damage. 5. Easy to Use: Press the "FVNC" button to cycle through monitoring modes, use "COST" and the "UP"/"DOWN" buttons to set the electricity rate, and press "Reset" to clear all settings. Designed for simple operation, suitable for all users. 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