Real-time monitoring - Measure and calculate power (w), energy (kWh), current (A), voltage (V), frequency (Hz), CO2 emissions (kgCO2), power factor, cost, maximum supply voltage, power, power Factor, frequency and real-time CO2 equivalent. You can also view this cumulative data by day, week, or month. Dual rate and single rate - With the new dual rate mode, you can set two electricity rates at different times as needed to calculate electricity bills more accurately. Overload Alarm - You can set the power of the safety alarm (up to 3680W). When the load connected to the socket exceeds the set value, the large LCD screen will flash "OVERLOAD" to warn the user. It can help you control the power consumption of electrical equipment and ensure the safety of electricity use. Data Retention - With a built-in battery, data is retained even when the meter is unplugged from the outlet. No need to worry about data loss due to sudden power outage. Parameters - Supply voltage: 230V AC 50Hz, Maximum current: 16A, Maximum power: 3680W, Accuracy: +/- 2%, Operating temperature: 0C - 40C. Product size: 16.5*8.3*7.7cm. Shipping quantity: 2 pieces.