Dual Rate: In dual rate mode, you can set two tariffs at the same time, allowing you to calculate and compare electricity costs at different times. For example, set different electricity prices for day and night to more accurately monitor the cost of household appliances and save energy and money. Accuracy and multi-function: After entering the electricity price, the electricity meter can accurately measure the energy consumption of the connected appliances measure and display the electricity costs directly without calculation. Through 7 modes, the time, kilowatt hours, voltage and cost, etc. can be clearly displayed. (Standby consumption measurement from 1 W) Backlit LCD display: 2.5 inch screen, no magnifying glass required, easy to understand and operate. Thanks to the backlight, numbers on the screen are clearly visible even in dark places or in tight corners. Power backup function: built-in rechargeable battery. In the event of a power failure, the energy cost meter retains its data and settings for up to 3 months as long as the emergency power supply is fully charged. Overload protection: Power display: 0-3680 W (standby consumption measurement from 1 W). When the load is over 3680W, OVERLOAD will flash on the screen to warn users. Dual Rate Dual Rate mode allows you to set two tariffs at the same time to calculate and compare electricity costs at different times. Wide viewing angle This LCD screen has a wide viewing angle. Whether you look at it from above, below, left or right, you can clearly see what's on the screen. Wide applicability Power range 0-3680W, ideal for Monitoring of the electricity costs of various household appliances such as refrigerators, dryers, home office devices, balcony solar systems, etc.